Re: Solving SOLR issues without reindexing/without restarting Alfresco?
Maybe yes, maybe no.... As soon as I have used my time machine to travel into the future I can tell you.
Honestly though, it depends completely on the issue you may encounter. Any statement I could make here will be based on stargazing. I can only recommend to thorougly test your ingestion process beforehand, fix any issues you find, and then do the whole process. Ideally, you will have fixed any issues and the question does not even arise...