In case this wasn't mentioned, a bug I find highly annoying is the deal where if you delete an opacity map out of the texture slot in the material tab under object attributes, it makes copies of other textures in the 2d objects project assets panel, and not even of the map you delete out of the slot. For example, I delete a light map out of the slot, then an alpha map I didnt want to use, and in assets, I now have 2 more copies (without the texture though lol) of the main first texture I used in the scene. So my main texture is named desmo_rr_color_1. I now have 2 more copies of it at the bottom of the list, desmo_rr_color_1_a_a and desmo_rr_color_1_a_oa (naming convention seems screwy too), but without the actual texture : /. Then of course when I delete these, even though they are not being used, it will strip the texture of my model and I will have to re-drop on to the model the correct texture, at the top of the list.

If the textures this is happening with are lightmaps larger than 256x256 this may be happening because enliven creates a sized down copy of any image larger than 256x256 when you put it in a lightmap slot. Those missed name copies you see are the resized instances and have to be deleted even after the original is gone.