Hi! We are currently upgrading from solr 6.2 master slave setup to solr 7.6 running solrcloud. I dont know if I've missed something really trivial, but everytime I start a full import (dataimport?command=full-import&clean=true&optimize=true) the old index gets overwritten by the new import.
In 6.2 this wasn't really a problem since I could disable replication in the API on the master and enable it once the import was completed. With 7.6 and solrcloud we use NRT-shards and replicas since those are the only ones that support rule-based replica placement and whenever I start a new import the old index is overwritten all over the solrcloud cluster. I have tried changing to clean=false, but that makes the import finish without adding any docs. Doesn't matter if I use soft or hard commits. I don't get the logic in this. Why would you ever want to delete an existing index before there is a new one in place? What is it I'm missing here? Please enlighten me.
