MFS in CA community property state. Do I also divide the state wages in half? (box 16 on W2)

Hi,

Filing MFS in CA for student loan purposes. Following TaxSlayer instructions, but they only talk about dividing box 1 and 2 from W2 in half. No mention of what to do with box 16. Does anyone have any insight? Or can freetaxusa or TaxAct handle this? Only trying TaxSlayer right now cause I saw some old posts that you can e-file MFS in community property states on TaxSlayer while others required paper file. With all the posts I see on freetaxusa, I’d use that if it can do MFS e-file with the 8958 form

Thanks for any input