We are running Magento Commerce 2.3.0 in a split database scenario. We do not really have a need for the split database at this juncture and it is causing more issues than make it worth it. I am toying around with trying to unsplit or merge them back into one. I do not see any procedure for this, but I am wondering if I can just follow the manual setup instructions, just instead of applying them to new blank databases, I would put the tables back into the main and then remove the calls for the split in the env.php.
https://devdocs.magento.com/guides/v2.3/config-guide/multi-master/multi-master_manual.html
Has anyone tried this or heard of a more valid method?