Treasure choices

[Patanga]

Hello!
If I am correct, we must pick up the treasures on the outside of the tigris and euphrates region first. When I play here on BGA, I connected my kingdom with a treasure inside to a treasure outside and was given the option to take the treasure from the inside, too.
Is that correct?

[epicgamer]

Treasures must be taken from corner temples first, not those outside the rivers.