There shouldn't need to be any "retraining" done. It isn't about changing how you do everything, usually it is just explaining how certain things are done differently at different places.
As someone who has just passed their test, I would hope your basic skills are fine, especially in regard to the basics such as landing, take off, climb out and the general handling element that is part of checking someone out at a new club.
So your experience should be about learning new procedures and about the local area, rather than training you how to fly the thing in the first place.