BUG 9.13.0 Windows - keep nodes/elements from group during merge

Hi
I did the following:

  1. I imported shell model and added geometrical groups in GEOM. - OK
  2. SMESH - I created QUAD4 and checked if all the groups are in mesh. - OK
  3. Exported mesh to med and imported the same mesh to check if the groups are there - OK
  4. Merged nodes of the original mesh keeping the ones that are in mesh groups - OK
  5. Merged the elements of the original mesh keeping the ones that are in mesh groups - OK
  6. Checked in viewport if after merging everything is ok - OK
  7. Exported mesh to med - OK
  8. Imported mesh to check if everything is ok - NOT OK
    This is before exporting:

And this is after import (even one of the groups is missing):

Am I doing something wrong?

HDF to download, link active till 12.12.2024:
Shared_on_Salome_forum

The same goes for v9.12.0 under Windows. There’s something off with merge option for nodes and elements. Even if you exclude groups, it still deletes nodes and elements form that groups…

I was hoping for that the dedicated Windows version will actually work… Could anyone check if Linux version have the same issue?

The same goes for v9.10.0…