Check differences in mpr files before & after opening in EC-Lab.

[PeterKraus]

I dont know if this is the right place for it. But I just noticed that if you just open an mpr and chose export as text, EClab will generate automatically additional data columns and save them inside the mpr file. The two attached files are the same file, before and after clicking and export as text. OpeningFiles.zip

Originally posted by @ileu in https://github.com/dgbowl/yadg/issues/37#issuecomment-1057041761