[Griffon_301]

to answer the original question-NO

to achieve this, you will have a little bit more work to do-and go get WinMerge for the complicated bit;

here is quick guide on how to add "old" stuff that is not packed into UI1.2;

before you start, back up all the ini files and the dat files in the STD dir as well as the all.ini from the MapMods folder;

first of all, do a clean install of UI1.2 as advised in the readme
get 1.1.1 and then install 1.2 over it;
clean up the resulting MOD directory as per install instructions-you have
finished the first third of the process now;
now, look into the newly created STD dir within the clean 1.2 folder;
you will see that several ini and dat files have been created, but not all you will need finally;
now use winmerge to compare the backed up 1.1.1 ini files with the new 1.2 ini files;
add the 1.2 stuff that is no in the 1.1.1 ini files, BUT do not apply this procedure
to the air.ini and the all ini-for these two work the other way round;
using winmerge, paste all stuff from 1.1.1 into the 1.2 files;

now, just drop whichever additional mods you would like to add from your old install;

finally, just drop the whole newly created merged 1.1.1 / 1.2 MODS dir into the game.
this procedure took me the better part of 2 hours, with most of the time used on copying the files around;

but it works

thanks to the whole team for the great work that UI1.2 is