I didn't understand in what a problem. It is possible to pass campaign in the current version of the generator for Italy, with the Italian signs and thus nearby there will be Bf.109 and Ju.87 with the German signs.
Yes, of course. Actually, I did so for "Africa settentrionale" campaign.
But in a campaign
for Germany, with Italian allies these latter often appear with German insignas on their planes and they also speak German on the radio.
I think this is due to
original lack of an Italian folder, speaking etc. which caused also sort of missing Italian interface also in DGen.
I can't refrain from complain with Oleg and TD for this shameful lack: even from original "Russian" point of view of IL2 1.0, Italian Regia Aeronautica did play a significant role, for sure not inferior to Finland and Romania, included in game from the beginning, while Italy is still missing even from TD updates.
I would hope that your DGen could fix this.