Fear of Deleting Indices

[renderpaz]

Hello,

So I'm pretty sure I have some useless indices, so I removed them from index.yaml and run dev_apserver with --require_indices and see that I get no errors.  I then deployed a new version with the pruned index.yaml and diverted traffic to it for a few minutes to see if all went well - no problems.

However, I still am afraid that once I delete the unused indices, something will go wrong.

The Question: If I deploy a version with a pruned index.yaml will it throw errors if I try to use an index that existed previously but is no longer in the yaml file?

I _really_ don't want to delete the index and then have it start throwing errors.

Thanks,

Kevin