Bug Sylvania Mounted skeleton

[Petitpain]

I didn't know if it's just me but i report one bug. I can't retrain mounted skeleton when i play Sylvania, i can train but can't retrain.

[Kaaihan]

The one that you hire on as mercs from hero screens cannot be retain, the normally paid for ones however, can be retrain. If you have a normally hire unit and a merc unit, you can transfer the normal unit then retrain the normal.