Signals Notebook: How to cancel bulk material imports and remove any added records?

Description

Users may start a bulk materials import but need to cancel it, currently the application does not support canceling an in-progress bulk material import. 

A request for the feature has been made at the Ideas Portal https://ideas.revvitysignals.com/ideas/SNB-I-717. Please comment there an vote for it.

Workaround

After completion, batches of incorrectly imported materials can be removed manually or using the "Delete and Reset" option to delete only registered records, clearing all records from the library but leaving the configuration unchanged.