Imported animated geometry causes empty VDB export

Hello friends, I’m new to EG so forgive me if this is a noob question.

I’m using EG v0.7.5.11. I have a pulsating bubble as an Alembic file, and imported it in my Node Graph as an animated geometry. My goal was to have smoke simulation happening inside of this mesh, therefore I used it as a collider. Everything works as I wish in the viewport, but when I try to export it as VDB into Blender, I get a very small, empty volume (no density visible inside).

If I disconnect the Import node and export, the VDB is still empty.

The problem disappears when I delete the Import node from the Node Graph.

This looks like a bug to me but maybe there is a way around. Am i missing something here?

Please see screenshot attached :slightly_smiling_face:

Thank you for your time and help!