We live in Illinois but my husband's company is based in Nebraska (we moved from Nebraska in 2019). They had been withholding only Nebraska taxes which got us in trouble with Illinois last year, where we had to start paying estimated taxes. Partway through 2020, they changed the withholding to Illinois. His W2 shows income and taxes paid to Nebraska as well as Illinois (split when they made the change). So it looks like we moved to Illinois partway through the year when in fact we were full year residents. So - should his earned income really be split between the two states the way the W2 shows, or do they need to redo it showing all the income was in Illinois but we paid withholdings to Nebraska?
