Our CPA set the rental up as a single property with both addresses showing for the property as "A" and "B" all those years ago.
That comment doesn't make sense to me. So take a look at your 2019 SCH E and tell me what you have. If you have "A" listed under column A of the SCH E, and "B" listed under column B, then it was reported as two physically separate properties on your 2019 tax return. You simply convert one of them (the one you're living in) from rental to personal use.
Otherwise, if you only have a single property listed under column A, and the other columns are blank, then we have to take a different route.
