Generally speaking, you will find copying many images with the file manager simply works better than moving them. Only for small numbers, e.g. a few images found to have have been misfiled, will carrying out moves within the LrC Folders panel be appropriate IMO. A bulk copy is quicker in practice but also safer in principle than a bulk move is.
And subsequently re-addressing one whole parent folder with all its contents, is much more efficient than having LrC readdress thousands of individual images one at a time as it transfers them each to its new storage location.
If you have done the copy as a bulk operation using Finder, as a Copy, the LrC Catalog will continue referring successfully to the starting images where they are. If that was done as a Move then it will not be able to continue to refer to those... no matter, either way. You can readdress the whole lot in a single go provided one key parent folder has been transferred, with identical folder structure inside. Once this readdressing is known to be successful, (if this was a copy) you can clean out the unneeded, and now un-used, images from the starting location.
No such bulk operation should IMO be contemplated though, unless both a separate files backup and a separate catalog backup are safely in place.