I filed electronically tax returns for a couple where each filed MFS.  The wife's return was accepted but the husband's return was rejected with a error message saying that the filing status should be MFJ because the wife is being claimed as a dependent.  My client decided to just file MFJ with the wife NOT being claimed as a dependent in their daughter's tax return.  Given that the wife's return was already accepted as MFS, can I amend her return to MFJ and ADD the husband's lone W-2 in the amended return OR do I need to paper file the husband's MFS return first before amending their tax returns to MFJ.  Any assistance to my issue will be greatly appreciated.