Maui update program 2 wiped out plasma 5 and all programs

[ali_deda]

The question is how did I have the Maui 2 with plasma 5.10.x, and when I tried to recover Maui plasma it was 5.11.3.

You might have installed Maui with some older Plasma version and then upgraded via Backports to Version 5.10. But when you have backports activated it will keep on rolling and install newer plasma, kde applications and kde frameworks version.
This is clearly explained on our homepage: https://mauilinux.org/part-rolling-via-backports/

Sorry, but what you writing to me does not make any sense. If I regularly update and I have a plasma 5.10.x and the sources list is the same as then the plasma did not come through the update to version 5.11.3. The same repositories, the same sources list, same backports repo and when I start apt install maui-desktop I get a magical wonders from the same backport repositories plasma 5.11.3. That should have happened through the normal update if it's RR distro  

Greeting and all the best wishes