lyx not a readable Lyx document

[Jean-Marc Lasgouttes]

Le 08/04/2022 à 08:18, Wolfgang Engelmann via lyx-users a écrit :
> are you saying, the lyx2lyx is changing in the 2.4.x?

The LyX format itself changes regularly during the 2.4.0dev timeline. 
lyx2lyx is updated simultaneously.

When 2.4.0 is released, the format will be fixed and lyx2lyx (barring 
bugs) will stay the same during the lifetime of the branch.
The only exception is that the last 2.4 version will get an updated 
lyx2lyx that can read the 2.5 format.

Likewise, LyX 2.3.7 will be able to read and produce the 2.4.0 format.

JMarc