MAX iterated objects? / group content limit?

Hi.
I have a Collection of over 1200 objects (one poly per object).
They’re not showing up in my object selector puzzle.

Is there any reason they wouldn’t?
ie: too many iterations?

they collection itself wasn’t showing up in the selector puzzle either, till i deleted it and replaced it and renamed it.

all their settings are fine.(render visible etc)

i added a new random object to see if that would show up in the collection, and it did.

now it’s just the objects that are not getting saved to the gltf or something??

they are in a complex pattern arrangement, and i used Sverchok Node add on in blender to make them. but they don’t have any connection to that any more. they’re baked out, and no sverchok nodes in the scene.

EDIT: fixed. the reason was i had them all parented to an empty, then removed the empty from the collection so it wouldn’t mess things up in the list, and cleared orphaned items (which the empty was since it wasn’t in a collection.) thing is, each item said it still had that as a parent in the object data parent field, so i didn’t think of it.

so when the parent is gone the entire hierarchy under it doesn’t export.weird.