To my knowledge, this was a rationale, only of the Tennessee Confederate Pension Board for denial of a pension.
As I've stated before, I believe the United Daughters of the Confederacy (UDC) have this same caveat for membership denial.
I know of one instance of a soldier, grievously wounded on three occasions during the war being denied a Tennessee pension. His last wounding was
at Franklin, Tenn. Dec. 1864. Confederate hospitals in the area were non existent. He managed to get home which was in Yankee controlled
territory near Nashville where he was cared for by family.
Rather than submit his relatives to retaliation by Federal troops for harboring a Rebel, he voluntarily gave himself up. Yet, he was denied pension, ugh!
I would believe there are innumerable instances where it was necessary to submit to the enemy before April 9.