where does LO 5.x config files?

I just installed the DEB 64-bit 5.2.0.x version

I had the 5.1.x version installed before it.

In the .config folder, I see libreoffice folder containing version 4, but I cannot find ver 5.x.x config files.

Where do they now reside in the Ubuntu/DEB system folders?

I was checking on some config files for 5.x versions and could not find them.

LibreOffice 5.x uses configuration files of 4.x version. On Unix
systems, they are stored in ~/.config/libreoffice/4/.

This is because 4.x -> 5.x change is done for marketing purposes, not
due to technical reasons. I read it on some mailing list back before
5.x was released, but I gave up searching for source of this claim. It
is there, somewhere.

No, the /4 path was retained because there was no real reason to change the
path, and some good technical reasons for compatibility with exiting user
profile and extensions. There were quite a few issues affecting UX during
migration from LibreOffice 3.x to 4.x and the impact on extensions.

The ESC simply elected not to repeat at the 4.x -> 5.x transition.

=-ref-=
https://bugs.documentfoundation.org/show_bug.cgi?id=57061
https://bugs.documentfoundation.org/show_bug.cgi?id=90747

http://nabble.documentfoundation.org/Minutes-of-ESC-call-2015-04-02-tt4145334.html
http://nabble.documentfoundation.org/minutes-of-ESC-call-tt4145792.html

germane notes from one more earlier ESC meeting...

http://nabble.documentfoundation.org/minutes-of-ESC-call-td4142383.html