How to add a Schedule E expense just for the state return?

On the "Other" expenses field for a Schedule E rental property, I need to add an expense that is only for the state return and not for the federal return (it's a 481(a) adjustment for a form 3115 accounting method change to apply a cost segregation study, and California needs a different 481(a) adjustment because they don't conform to bonus depreciation). 

I think the way to do that is to enter an expense for the rental for the adjustment with "Source" set to "N" for the federal adjustment, and then a separate expense for CA with "Source" set to "S".  But that doesn't seem to work at all.  The "N" source amount still shows up on the CA return, and the "S" source amount doesn't show up anywhere, it doesn't flow to the CA return at all (the PDF output of the entire tax return is completely unchanged after adding an "S" source expense).

Edit:  This is in multi-state mode.  And I did find that it works fine if I change their "Resident State as of 12/31" to a different state, but that doesn't help because they're a CA resident.  The issue might be because CA residents are taxed on all their income regardless of the state, but we still need a way to specify a different expense specifically for the state for this type of situation.