Dear Mr. Shriver,
two Full Text server connections seem very unlikely to be intended.
it seems that there is some kind of error within the configuration.
What you could try would be to investigate further into the solr.xml
located in "C:\Program Files\DocuWare\Full-Text Server (x64)\webapps\solrt\solr"
and see how many cores there are listed corresponding to the amount of your file cabinets.
Non the less the problem itself seems more tricky then it initially is so i highly
recommend to open a support case to get help on that.
Editing the solr.xml without proper help could cause damage to the system.
For resetting Full Text in DocuWare 6.12 you can look at this FAQ article:
Mit freundlichen Grüßen | With best regards
Software Support Specialist Team BLUE EMEA