This may be because you used the Plant Mode Move Tool feature to move other levels of plants over, which causes some of your plants to repeat with the original levels, you can select instanced Foliageactor, Then in the following Foliageinstancedstaticmeshcomponet choose to delete your plants
Foliage tools such as paint, erase and remove donāt work if the foliage instances are nanite, if you turn off nanite for them you can reapply, edit, paint, and the turn nanite again.
but this is a PAIN in the ā ā ā TBH
Makes sense though. Nanite bakes an optimized (poorly) mesh that replaces the actual instancesā¦