Am So., 7. Juni 2020 um 13:35 Uhr schrieb Jakob Reschke
<forums.jakob at resfarm.de>:
>
> Am So., 7. Juni 2020 um 12:44 Uhr schrieb Marcel Taeumel
> <marcel.taeumel at hpi.de>:
> > If you happen to have local flap tabs (not just the shared/global ones),
>
> Exactly! ...how could I not know that they cause this... ;-P

Confirmed: if I remove the flaps from my broken image, I can
successfully reopen it with the sources file in place. If I create a
new flap, it will not work with the sources file.

But updating makes more sense than losing all my flaps. :-)