On import, folders display above parent folder

Lately, whenever I import photos into Lightroom Classic (latest version, PC running Windows 11), the newly created date folder consistently shows above the parent folder in the Library module, although the files are correctly located within it, as “Show in Explorer” reveals. I am unable to drag the new date folder into its proper place (the year folder), because the path is technically correct, meaning the photos are already where I am trying to put them. Hoping others may have had and solved this problem, although I did not see any discussions about it. I did recently have to replace the drive in question, as the old one was damaged, could this help explain the problem? Thanks in advance for any suggestions.