[Nadia]

Well I did it. Installed 4,09m Internationale with all new AI planes and
new flyables, preserved all my past mods. Added even more.
Had 4,09b1m; rolled back (not switch back) to 4,08m like this;
create bogus UBISOFT file. Change true UBISOFT file name to protect.
Install Mod activator 5.2 into bogus. Examine. Delete unessary
mods-cockpits-flyables in there that you already have; there by prevent
the overwriting of any more up to date versions by these older ones.
Skip this if you dare. Make copies of all files that will be changed.
Apply all remaining files of MAc 5.2 (from bogus) to the real UBISOFT.
Now check you are 4,08m and all is working. Of course mods, maps
objects from 4,09b1m are not. Apply patch 4,09m to 4,08m.
(don't know if it can be applied directly on 4,09b1m). May be so.
May be is incompatible. Go to www.sas1946.com. Register or/and log-in.
Click Essential SAS. :!: Select the proper download to install:
SAS Mod Activator v2.1 ~ 4.09m from Previously Modded Game.
Do not use: SAS Mod Activator v2.2 ~ For Clean 4.09m. It comes highly
recommended, but you start from scratch. Follow all instructions carefully,
edit files as suggested. Use your experience and common sense to prevent
mistakes. You may have to apply most recent SAS buttons.
You now have all 4,09m new features [new flyables (Avia534/SM79),
new AIs, and more]; You have all your past mods still workings; you may
apply more SAS patchs to make the new AIs become flyables as well (such
as RE 2000, CW21). You can now apply mods that had not worked for you
in the past, such as Mig15bis and F86A5 for me.
Done. Move on.

( If any features of 4,09b1m clash or competes with 4,09m use the bogus
method, pretend to install 4,09b1m into bogus, find and select files that needs
to be removed, paste to real UBISOFT and delete. Essentials files have already
been overwriiten, or replaced by 4,09m, therefore should not be removed).