Catalog lost connection to NAS. Is it possible to change the path or recombine all images?

Hello,

My photos (45000) are all on a NAS. I created my catalogue with Elements 15 on my laptop. Recently I had to change the names of all network paths. In the catalog, all images are now displayed as offline. Folder by folder I can reconnect the images. But this is so tedious that it would take weeks. Is there a way to rename the path or recombine all images at once?

Does anyone have an idea?