How should I handle mortgage interest deductions on mock MFS federal returns when filing MFS state returns - all on one (state where home is) or split it?

[bigbadone]

We're filing federal MFJ and filing separate state returns (OR and DC).  Our home is in OR where wife lives, and I work in DC living in a rented apartment.  Should/May I split the deductions or keep it all on wife's OR state return? Tx

[KrisD15]

You may split it. It is not a tax, so it does not need to be entered on the state return where the property is located.