@traditionsllc welcome to the Rockstor community.
I am not an expert in using Active Directory services, However, have you taken a look at this (somewhat aged) post already? I know it eventually not resolve the issue, but maybe some settings around enumeration, etc. will be helpful for your case…
I guess, if you’re updating any of the sssd settings then it seems from what I read is that you often times also need to clear out the cache (which you might already be doing). Also, not sure about how case-sensitive the config file is on both the keys (e.g. True vs. true).