I'm facing a peculiar problem. Whenever I try to select a group of primitives in my imported model, many other primitives in the model are selected as well. If I perform an operation, like a Blast or Delete some completely different group of primitives is affected.

For example, on the screenshot some primitives outside of lasso selection are caught too. This happens all over the model.

What might be going on here?

If you are using 15, you have to delete the material attribute, due to a bug with primitive selections.

I'm using H16. The model has only two point attributes (P and Cd).

Sounds like another bug. Can you send it to SideFX?

https://www.sidefx.com/forum/topic/15603/ [sidefx.com]

Sure. I just wanted to make sure first if it wasn't a user error on my side.

Reported. Ticket #46730.