Importing .lrcat files from old Mac to new Mac gives single exclamation mark in a triangle

[chasef59874115]

Hi Community,

I'm trying to transfer my catalog of edited photos from my old Mac to a new Mac. 

So far I have:

• Exported the entire Lightroom folder from the old Mac which contails several .lrcat folders to an external hard drive where I keep my raw photos.  
• Synced my Catalog to the cloud from the new machine.
  • The photos load up but do not include any edits I gave them
•  Imported all files ending with .lrcat to try to import the catalog from the old Mac
  • Doing this yields a single exclamation mark where the photos would appear. Note: it is not an exclamation mark next to sever photos or blank filds, that is a separate issue. I cannot fnd and image of this on the internet. I can try to get a screenshot of this later tonight. 
• Researched online for this issue, and followed several youtube tutorials    

Any help would be appreciated!

[GoldingD]

Method would have been:

https://www.lightroomqueen.com/how-move-lightroom-to-new-computer/

As for dealing with missing folders/photos after the fact

http://www.computer-darkroom.com/lr2_find_folder/find-folder.htm