What do you do with your old primary when you move into a new one

[Kuriakos Mellos]

Hi everyone, I moved from my condo (which was my primary for almost 2.1 years) into a SFH in February this year. I only obvioulsy have one primary tax exemption but what else needs to be done? Letting lenders know? I had my dad move into my condo and he lives there currently and pays me rent. I am asking because I have an opp to move over to MI for a job and was going to take advantage and buy a new primary there and convert the recent SFH that I bought into another investment - want to make sure I am crossing my t's and dotting my i's. I have been at the SFH since Feb - so going on 9 months and even if I find a new home, by the time I close and go thru the process to move into in MI it would be like Dec or January at the earliest.

Thank you and all help would be greatly appreciated!