How to clear all documents from the index for a particular source
We have a source that crawls web pages of an external site. Is there a way to clear all the documents that have been indexed for that source so we can start with a clean crawl and index of that source?
Rebuilding is the way to go.
If you absolutely want to clean and then rebuild, a "solution" would be to add an exclusion filter "*" and rebuild.
It will clean everything.
Then simply remove the filter to crawl new content.