HELP! Working off External hardrives issue 2.0~!

[Tom_brown3]

Hi all! I posted yesterday and I copied all my LRC catalogs and photos to an external drive, which I then back up to another for Safety. I also did a time machine backup before doing anything so my work is safe. I followed the instructions to a T. The issue I am having now is that a big chunk of my work from when I was still working off a MacBook air is still missing. A photo will have an exclamation point, and I will try and find it. It tells me to find it in Lightroom/mobiledownloads.lrdata/Macbook air/filename. 

On my external drive there is a Mobiledownloads catalog, but I cant click on it. Im also haveing trouble finding it on my time machine. Can anyone help?

[cmgap]

Did you do a system search on '.lrdata'? Are you on Big Sur?

[Tom_brown3]

Yes, Im in an m1 macbook pro running latest big sur

The funny thing is it comes up nowhere in my time machine search. 

Before doing the transfer on the left side if lightroom, in the locations section there used to be a MacBook air that I would see. now its gone!