Seems to me from reading the instructions that you do NOT need to fill out or file Form 1310
Who Must File
If you are claiming a refund on behalf of a deceased taxpayer,
you must file Form 1310 if:
• You are NOT a surviving spouse filing an original or amended
joint return with the decedent; and
• You are NOT a personal representative (defined later) filing,
for the decedent, an original Form 1040, 1040-SR, 1040A,
1040EZ, 1040NR, or 1040-NR that has the court certificate
showing your appointment attached.
Example. Assume Mr. Green died on January 4 before filing
his tax return. On April 3 of the same year, you were appointed
by the court as the personal representative for Mr. Green’s
estate and you file Form 1040 for Mr. Green. You do not need to
file Form 1310 to claim the refund on Mr. Green’s tax return.
However, you must attach to his return a copy of the court
certificate showing your appointment.
Everyone in this thread is saying they ARE the legal representative therefor you do not file form 1310 but since you must attach the court document you will have to mail in the return. Read the instructions before trying to file a form. I recommend you all call the IRS to see if you can send in the court documents separately rather than attached if you really want to efile that badly. This is not a glitch in the program and that is why it has not been "fixed".
