ah well, I heard there were other skins that didn't see "combat".
<snicker> Ja.
Anywho... I would argue that any flights in late March of '45, between Stendal and Rechlin constitutes a combat flight. That Dora wasn't along just for the ride.
In fact, the bulk of JG11's Ta152's were lost in just such a manner. Not a test flight, but rather a ferry flight, from Rechlin to Leck.