Working on a problem for Grenso, I came across something different.
I managed to get a 3D object imported to an GR2 that was done in version 1.1.1.265
I saved that import under a new name with version 1.1.1.454
when exiting? I was told the original GR2 was changed and did I want to save. So I did.
I opened the same file that I had not opened with 1.1.1.459 and then saved it with out doing anything.
I compared the files with 010 and I see a butt load of difference.
Not sure what this all means but it's interesting none the less.