Taxpayers filed 2019 Joint Federal Return. Husband is in military, resident of California. Wife lives in New York. Filing a California Non-resident (540NR) , Status Married Filing Separately for husband. Electronic filing requires that I send a copy of the federal return to California. My file includes a "dummy" federal return but it is not being filed since they are filing a joint federal return. Is it OK to send the "dummy" federal return as an attachment to the California return or should I be doing something else?