v16.1 QEA vs QEAX repositories for project transfer

[Paolo F Cantoni]

We're now seriuously looking at SQLite repositories for our snapshot clones.  However, we are experiencing several issues.  In a post (which, thanks to our board's splendid search function^[1]), I can no longer find!  Sparxian Eve says (probably paraphrased - since I can't find it any more) that the only difference between the two file types is renaming qea to qeax.  Indeed, there is only an EABase.qea file in the Program Files folder (unlike the EABAse.eap and EABase.eapx repositories), so that seems to bear out her comment.

So, we compared a project transfer from the same SQL Server origin to both a .qea and a .qeax destination.  The ONLY change being renaming the target file type.
The the origin transfers successfully to the .qea repository but fails to the .qeax repository  (it complains about the structure of one of the tables - notwithstanding that the empty destination file was identical when the transfer started!).

Has anybody seen this?  Anybody hazard a guess as to what is happening?

TIA,
Paolo

^[1] "It's a joke, Fred!"  <-- Fred is supposed to be J o y c e, but no matter how often I replace Fred with her name , the board will suppress it!  WHAT A WAY TO WRITE SOFTWARE!