File Search function broken?

I’ve just copied over a huge project from a backup drive to do stems and Nuendo can’t find the relevant audio files. I’ve had to select each file manually. Normally you’d select one file in the audio folder and Nuendo would immediately find the the rest. Using the Search function and directing Nuendo to the audio folder (you can see all the audio correct audio files there) doesn’t work.

Anyone else having the same issue?

Could disabling ‘Allow files on this drive to have contents indexed in addition to file properties’ on the Audio SSD have something to do with it?

Did a quick test. Enabled the file indexing function on the drive and copied one of the projects again as a test and got the same thing…