As a product of enabling the write of separate LineIDs (described here https://github.com/tcunit/TcUnit/issues/85) and having a discussion with Beckhoff support, it was concluded that the files "LineIDs.dbg" and "LineIDs.dbg.bak" should not be version controlled, and thus these two are added to the gitignore-file for TwinCAT3.
Jakob Sagatowski