[2.0.16] Upgrade planner incorrectly supports captive biter spawner

[Legitimate Teddy]

In the upgrade planner, any quality of captive biter spawner may be selected, but only on the "to" side of the planner.
On the "from" side, it simply doesn't appear at all.
Attempting to set a "from" filter while a "to" filter is set gives an empty selection list.

"To" selection list, captive spawner present.

11-09-2024, 23-52-25.png (263.24 KiB) Viewed 1327 times

"From" selection list, captive spawner absent.

11-09-2024, 23-51-30.png (203.08 KiB) Viewed 1327 times

Empty selection list on "from" while captive spawner is set on "to".

11-09-2024, 23-43-24.png (66.67 KiB) Viewed 1327 times

[Rseding91]

Thanks for the report. Looking into this, this is a side effect of us deciding if destination values should exist without having a source entity. I don't see a simple answer to this so for now I'm putting this into minor issues.

[_Bluestone_]

Any update on this yet? Would be nice to clear this up in 2.1

[Rseding91]

No. Once something goes into minor issues it generally isn't worked on further as all known ideas were explored and rejected.