bug: when a file is loaded, a calibration (file) should not effect it

[vreijs]

Bug Report

NanoVNA-Saver version:
0.5.5

'File load', 'calibration'

Current behavior:
When am s1p or s2p file is loaded, the plotted results are changed when the calibration source is changed.

Load 'File' and 'Calibrate'

Expected behavior:
IMHO, the saved file should not be effect by calibration.

Steps to reproduce:
Load 'File' and 'Calibrate' and see the graphs and number change.

When a file is loaded (be it as a current or reference) that specific file should not be changed if calibration is changed. When doing a new 'Sweep' or when changing the calibration file for a already swept input, the calibration should only effect such a sweep.

Related code:

insert short code snippets here

Other information: