Chunked documents are not reindexed when delete a document

Question

I'm using chat playground from azure open ai studio with the option "add your data" to follow the image scheme.

After create datasources,skillset,indexes and indexers, everything work fine.

When I delete a document from storage, I have a custom process that manage from c# that do the next steps:

• Delete document from storage by Id
• Delete all chunked documents
• Delete and create indexes again
• Reset indexers
• Run indexers (*)

After these steps, the index with the original documents is OK, but the index that must be contain chunked documents is empty:

• Chunked documents are created OK by skillset

(*) When re-run indexer from azure portal chunked documents are OK in the index.

What difference are between run the indexer from c# or from azure portal?

Why only occurs this problems with chunked documents and not with original documents?

Thanks a lot

Eduardo