You need to move from one solr instance to another and can't be bothered with mismatching versions or whatever?
These two scripts will help you :)
First you need to create a new core in the target instance.
You may want to use the schema/configset from the originating instance though, as the default schema might not be ideal.
Im my scenario I moved from Solr 5.5.5 to Solr 7.4.
Therefore I had to (at least) update the
solrconfig.xml, where the lucene version is specified.
The exact version you need can be found in the default configset (