Move Troops

[X-EOM/SS (Marco)]

Is it possibile, using Move Troops actions, to move regent's units into a province of his vassal?

[X-Bellam & BC/TB (Bobby)]

Most vassalage agreements permit the liege to move military forces freely within vassal territories.  I'd consider that the default unless the agreement specifically says otherwise.

[DM B]

Bobby is right; by default lieges have military access to their vassals' lands. There are some exceptions (Mieres and Serien for example), but not many.

[X-EOM/SS (Marco)]

have units to be in active status?

[X-Osoerde (Alan)]

No. Typically, when you have military access you do not need to have your units of 'Active' status to move them, though having units on 'Active' status can be beneficial.

[DM B]

have units to be in active status?

No