Turbo Tax is calculating I owe 2021 taxes in a state that was only for mailing address but I did not live in

Hello

TT is calculating I owe 2021 taxes in a state that was only for mailing address but I did not live in and was not a resident at the time I received income.

The W-2 has the mailing address (Montana) but does not show any state in box 15 and 16. The W-2 shows SUI from the state I was resident (Alaska), which is not subject to state tax,  at the time of income distribution.

Couple of points

1) the W-2 is for a gross up distribution for 2020 taxes.

2) I did move to the mailing address state in 2021 due to being laid off 2020. As such, I will file a state return for any income received after becoming a resident of Montana. 

3) I have full documentation of Alaska residency in 2020 (including SUI withholding on W-2) and when residency was established in Montana in 2020.

The question is should I file federal and state separate from one another in TT or can I remove the W-2 wages from the Montana state calculation before filing through TT?

Thank you