Thank you all for clarifications and suggestions! I suspected the files were connected to the new 2.2 version, It's better to ask before deleting files and discover doing something stupid too late.
2016-08-02 17:52 GMT+02:00 David L. Johnson <david.john...@lehigh.edu>: > On 08/02/2016 10:40 AM, Rich Shepard wrote: > > On Tue, 2 Aug 2016, David L. Johnson wrote: > > These are being created since the files were edited by the new version of > LyX you installed, which uses a newer format. LyX then auto-saves them in > the old format so that you can edit it, if you need to, with an older > version of LyX. This seems to be a reasonable thing to do at the start of > a new format, and will not occur when you edit files using LyX-2.2 that > are already in the new format. > > > David, > > Thanks for the clarification. I don't recall seeing these files when > previous versions (from 1.0 on) were upgraded. > > > It was certainly not the case with every change of format --- and was > probably added because someone got caught with a file they could not edit > after going to a new version of LyX, then backing out of the upgrade for > some reason. I am not sure whether this feature had been added earlier --- > I don't have such backups around except those created by lyx 2.2. > > > -- > > David L. Johnson > Department of Mathematics > Lehigh University > >
