Mass shift for CAM appears to have changed in predicted libraries

[jacoblippincott]

I generated Prosit libraries a few months ago, before the server was taken offline for maintenance and the mass shift for carbamidomethylation of C reported as 57.0214635.

After the sever came back online I generated a few more libs and the mass shift is reporting as 57.021464.

This might not normally be a big deal but I merged some libraries together and now I have two different mass shifts for the same mod (they are very close to each other I know).

Was it intentional to change the mass shift? If so I will remake the old libraries but I wanted to contact you before I did so.