QnA Maker - Updating Knowledge Base

Question

My QnA Maker service is currently trained on an excel file I have uploaded. If I update my knowledge base via the QnA maker settings tab and upload a new version of this excel file (deleting the old one), will it overwrite the whole knowledge base? Or just change what I've edited/ added in the file?

Furthermore - Will I loose QnA pairs that are 'sitting' in the Train API (As it only pushes to the knowledge base after a number of users send similar feedback)?

Answer 1

Reply from Qna Maker Team support (12/2/2018): If you upload it on the settings page, 'Files' section, it will not rewrite the entire knowledge base, only the file you reuploaded. It will also retain the training data. Only 'replace knowledge base' will nuke your training data and Kb.