diff --git a/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java b/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java
index 5a059be83..48de350fe 100644
--- a/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java
+++ b/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java
@@ -63,7 +63,7 @@ public IdeManagementExtension(Project project) {
      * @return whether this is an IntelliJ-based invocation
      */
     public boolean isIdeaImport() {
-        return Boolean.getBoolean("idea.active");
+        return Boolean.getBoolean("idea.sync.active");
     }
 
     /**
diff --git a/neoform/src/main/java/net/neoforged/gradle/neoform/runtime/extensions/NeoFormRuntimeExtension.java b/neoform/src/main/java/net/neoforged/gradle/neoform/runtime/extensions/NeoFormRuntimeExtension.java
index 49eb916cd..ff66f36a3 100644
--- a/neoform/src/main/java/net/neoforged/gradle/neoform/runtime/extensions/NeoFormRuntimeExtension.java
+++ b/neoform/src/main/java/net/neoforged/gradle/neoform/runtime/extensions/NeoFormRuntimeExtension.java
@@ -436,7 +436,7 @@ protected void bakeDefinition(NeoFormRuntimeDefinition definition) {
         remapTask.configure(task -> configureMcpRuntimeTaskWithDefaults(spec, neoFormDirectory, symbolicDataSources, task));
 
         TaskProvider<? extends WithOutput> recompileInput = maybeApplyParchment(
-                spec,
+                definition,
                 remapTask,
                 symbolicDataSources,
                 neoFormDirectory,
@@ -492,19 +492,19 @@ protected void bakeDefinition(NeoFormRuntimeDefinition definition) {
         });
     }
 
-    private static TaskProvider<? extends WithOutput> maybeApplyParchment(NeoFormRuntimeSpecification spec,
+    private static TaskProvider<? extends WithOutput> maybeApplyParchment(NeoFormRuntimeDefinition runtimeDefinition,
                                                              TaskProvider<? extends WithOutput> recompileInput,
                                                              Map<String, String> symbolicDataSources,
                                                              File neoFormDirectory,
                                                              Provider<RegularFile> listLibrariesOutput) {
-        Project project = spec.getProject();
+        Project project = runtimeDefinition.getSpecification().getProject();
         Parchment parchment = project.getExtensions().getByType(Subsystems.class).getParchment();
         Tools tools = project.getExtensions().getByType(Subsystems.class).getTools();
         if (!parchment.getEnabled().get()) {
             return recompileInput;
         }
 
-        TaskProvider<? extends Runtime> applyParchmentTask = project.getTasks().register(CommonRuntimeUtils.buildTaskName(spec, "applyParchment"), DefaultExecute.class, task -> {
+        TaskProvider<? extends Runtime> applyParchmentTask = project.getTasks().register(CommonRuntimeUtils.buildTaskName(runtimeDefinition, "applyParchment"), DefaultExecute.class, task -> {
             // Provide the mappings via artifact
             File mappingFile = ToolUtilities.resolveTool(project, parchment.getParchmentArtifact().get());
             String conflictPrefix = parchment.getConflictPrefix().get();
@@ -526,10 +526,19 @@ private static TaskProvider<? extends WithOutput> maybeApplyParchment(NeoFormRun
             task.getProgramArguments().add("{input}");
             task.getProgramArguments().add("{output}");
 
+            final StringBuilder builder = new StringBuilder();
+            runtimeDefinition.getAllDependencies().forEach(f -> {
+                if (!builder.isEmpty()) {
+                    builder.append(File.pathSeparator);
+                }
+                builder.append(f.getAbsolutePath());
+            });
+            task.getProgramArguments().add("--classpath=" + builder);
+
             task.dependsOn(listLibrariesOutput);
             task.dependsOn(recompileInput);
 
-            configureCommonRuntimeTaskParameters(task, symbolicDataSources, "applyParchment", spec, neoFormDirectory);
+            configureCommonRuntimeTaskParameters(task, symbolicDataSources, "applyParchment", runtimeDefinition.getSpecification(), neoFormDirectory);
         });
 
         return applyParchmentTask;
diff --git a/platform/src/functionalTest/groovy/net/neoforged/gradle/platform/E2ETests.groovy b/platform/src/functionalTest/groovy/net/neoforged/gradle/platform/E2ETests.groovy
index 52a960e33..fb7d651ff 100644
--- a/platform/src/functionalTest/groovy/net/neoforged/gradle/platform/E2ETests.groovy
+++ b/platform/src/functionalTest/groovy/net/neoforged/gradle/platform/E2ETests.groovy
@@ -549,7 +549,7 @@ class E2ETests extends BuilderBasedTestSpecification {
             }
             
             dependencies {
-                implementation 'net.neoforged:neoforge:1.0.0-published-userdev-can-be-loaded'
+                implementation 'net.neoforged:neoforge:1.0.0-published-userdev'
             }
             """)
             it.withToolchains()
diff --git a/vanilla/src/main/java/net/neoforged/gradle/vanilla/runtime/steps/ParchmentStep.java b/vanilla/src/main/java/net/neoforged/gradle/vanilla/runtime/steps/ParchmentStep.java
index 2fff73a37..041f49b74 100644
--- a/vanilla/src/main/java/net/neoforged/gradle/vanilla/runtime/steps/ParchmentStep.java
+++ b/vanilla/src/main/java/net/neoforged/gradle/vanilla/runtime/steps/ParchmentStep.java
@@ -12,10 +12,7 @@
 import net.neoforged.gradle.dsl.common.util.CommonRuntimeUtils;
 import net.neoforged.gradle.dsl.common.util.GameArtifact;
 import net.neoforged.gradle.vanilla.runtime.VanillaRuntimeDefinition;
-import net.neoforged.gradle.vanilla.runtime.spec.VanillaRuntimeSpecification;
 import org.gradle.api.Project;
-import org.gradle.api.Transformer;
-import org.gradle.api.artifacts.ResolvedArtifact;
 import org.gradle.api.file.RegularFile;
 import org.gradle.api.provider.Provider;
 import org.gradle.api.tasks.TaskProvider;
@@ -34,28 +31,28 @@ public TaskProvider<? extends Runtime> buildTask(VanillaRuntimeDefinition defini
         final TaskProvider<? extends WithOutput> collectLibraryInformationTask = pipelineTasks.get(CommonRuntimeUtils.buildTaskName(definition, "libraries"));
 
         return maybeApplyParchment(
-                definition.getSpecification(),
+                definition,
                 inputProvidingTask,
                 workingDirectory,
                 collectLibraryInformationTask.flatMap(WithOutput::getOutput)
         );
     }
 
-    private static TaskProvider<? extends Runtime> maybeApplyParchment(VanillaRuntimeSpecification spec,
+    private static TaskProvider<? extends Runtime> maybeApplyParchment(VanillaRuntimeDefinition definition,
                                                                        TaskProvider<? extends WithOutput> inputProvidingTask,
                                                                        File vanillaDirectory,
                                                                        Provider<RegularFile> listLibrariesOutput) {
-        Project project = spec.getProject();
+        Project project = definition.getSpecification().getProject();
         Parchment parchment = project.getExtensions().getByType(Subsystems.class).getParchment();
         Tools tools = project.getExtensions().getByType(Subsystems.class).getTools();
 
         if (!parchment.getEnabled().get()) {
-            return project.getTasks().register(CommonRuntimeUtils.buildTaskName(spec, "applyParchmentNoop"), NoopRuntime.class, task -> {
+            return project.getTasks().register(CommonRuntimeUtils.buildTaskName(definition, "applyParchmentNoop"), NoopRuntime.class, task -> {
                 task.getInput().set(inputProvidingTask.flatMap(WithOutput::getOutput));
             });
         }
 
-        return project.getTasks().register(CommonRuntimeUtils.buildTaskName(spec, "applyParchment"), DefaultExecute.class, task -> {
+        return project.getTasks().register(CommonRuntimeUtils.buildTaskName(definition, "applyParchment"), DefaultExecute.class, task -> {
             // Provide the mappings via artifact
             File mappingFile = ToolUtilities.resolveTool(project, parchment.getParchmentArtifact().get());
             File toolExecutable = ToolUtilities.resolveTool(project, tools.getJST().get());
@@ -75,10 +72,19 @@ private static TaskProvider<? extends Runtime> maybeApplyParchment(VanillaRuntim
             task.getProgramArguments().add("{input}");
             task.getProgramArguments().add("{output}");
 
+            final StringBuilder builder = new StringBuilder();
+            definition.getAllDependencies().forEach(f -> {
+                if (!builder.isEmpty()) {
+                    builder.append(File.pathSeparator);
+                }
+                builder.append(f.getAbsolutePath());
+            });
+            task.getProgramArguments().add("--classpath=" + builder);
+
             task.dependsOn(inputProvidingTask);
             task.dependsOn(listLibrariesOutput);
 
-            configureCommonRuntimeTaskParameters(task, Maps.newHashMap(), "applyParchment", spec, vanillaDirectory);
+            configureCommonRuntimeTaskParameters(task, Maps.newHashMap(), "applyParchment", definition.getSpecification(), vanillaDirectory);
         });
     }