[Issue]: Does cache still work if extracting one-file graphRAG from a multiple files graphRAG?

[Edwin-poying]

Hi, Here is the scenerio I currently confront:

I build a graphRAG based on two distinct .txt file. And later, I want to see if I can build a graphRAG based on one of them. After I modify the settings file to ensure that only one file gets ingested, I run the following command python -m graphrag.index --root .

I was expecting that this act will not cost too much if the indexing stage can leverage the cache; however, it still make complete calls to Openai to build the graph.

So, can someone tells me if I did wrong or this scenerio has not been supported yet.

Many thanks.