I am seeing this too with a similar Solr configuration. I also believe this is a bug.
We have five splits, four for Acquia environments and one for DDEV local. We have config for a view in the main sync directory. With the DDEV split active, exporting the config results in removal of the view config from the sync directory and it is added to the local split directory.
Adding the view config to the partial_list on each split still results in the config being deleted from the main sync directory.
Copying the view config to each split directory and adding it to the complete_list on each split also removes it from the main sync folder, but at least each split still has the config which is safer than accidentally deleting it.
I'll add this to my list of stuff to investigate.
AlanHDev → created an issue.
Reviewed and tested. Working perfectly.