Hi Luigi,
You may always use imports via task list of the project that linked to UC.
but this is import all project buffer in que.
What the reason of customers that they want use only task list and not actions?
And what is the problem to use actions?
Unlocked task list of UC will not give any benefits regarding to UC transport import or release.
It is more easy to switch UC statuses via actions and import will be done automatically.
Otherwise you need to go to Task list and press additional buttons that will do the same.
Rg Dan