OK !
although,
I've done many tests and now I know how to transfer dark avatar ships to twilight of arnor :
- go to your dark avatar folder, you'll see many folders especially 'ships' and 'shipstemplates'
- take all files inside
Document XML
Fichier SHIPCFG
-Just place them into tiwilight save folder ships to ships and 'shipstemplates' to 'shipstemplates'
When you play, remember the race style, so if it's drengin style in dark avatar (appearance), select drengin in twilight too. I'm sure may be there's no bug (not tested yet) because TA is the last version
May it helps
your welcome