First, you must close the old home office in the old house. Until you do that, dealing with the new home office in the new house should not even be on your radar yet.
Basically, start working through the old home office and select the option for "I stopped using this asset in 2018" and work it through completely.
Once you have closed the home office, what you do after that depends on a few things.
- Did you own the home this old home office was in, and if so did you sell it? Convert it to rental? Something else?
- Maybe you were renting the home and have moved because the lease ended?
