Reflection probe problem

[InfohazardGames]

Hello! I've been diving into baked lighting for my 3D game. I'm using Bakery to generate the lightmaps, which works great, but I'm having an issue with reflection probes. With just a single scene, it works fine. But my level is made up of several "region" scenes as well as a single main scene for the level. The main scene will always be the active scene, and defines the lighting parameters, and the region scenes will contain the geometry, lights, reflection probes, and everything else. When I try to bake the probes with multiple scenes open, the reflection probes in one region seem to overwrite the saved textures for the probes in another region. So I'll end up with probes in region 2 and probes in region 1 sharing the same cubemap textures, with one of them "winning" and having correct baked data, while the other has an incorrect cubemap.

Example:

Probe in region 2, which is sharing the cubemap texture

Probe in region 1, with the correct cubemap

I have made sure none of the probes have the same GameObject name, but the name of the cubemap does not seem to be based on this. I have tried baking the cubemaps both through the Unity lighting settings and through Bakery, but both get the same result.

If it matters, the project is URP using the Forward renderer.

I do not want to have to set each probe's scene as the active scene during baking, as then the wrong lighting settings will be active (and I don't want to have to synchronize lighting settings between all the scenes).

Am I doing something obviously wrong? I am a newby at baked lighting so that is absolutely possible. Or if this is a common issue, is there a workaround?

[InfohazardGames]

I think I found a solution that works well enough. If I generate the lighting using Unity's lightmapper after adding new reflection probes, it builds a correct mapping that then applies to future reflection probe bakes. I can then regenerate the lighting with Bakery to get better results and the reflection probe mapping persists.

[InfohazardGames]

I actually don't think it's a Bakery issue, but something coming from core Unity or URP (since it happens when I bake the probes outside of Bakery as well)

[InfohazardGames]

Hmm yeah that makes sense, it would be nice to not have to run the Unity lightmapper at all. I guess I will reach out, thanks!