Migrating from Lightroom classic to Lightroom Cloud

It's good to remember that there is usually a huge difference between download speed and upload speed. As an example, my Internet upload speed is over 900 Mbps, and that's the speed that most providers advertise. But the upload speed is only 40 Mbps. And with an upload speed that slow it could take a long time to upload a large LrC library. I mainly use Lightroom Classic, and have never migrated my entire library to Lightroom. I think "probably" the best choice would be to start new with Lightroom and not try to migrate a huge Lightroom Classic library. Maybe if there are a few folders that you really want migrated close could be imported. But migrating such a large Lightroom Classic collection might not be the best choice. At least that's my opinion. You can keep using both versions. But, of course, it's your choice.

I migrated a 600MB catalog with 12K photos last year.  The migration is nerve racking becuase Adobe does not give good tools to know what is going on.   In fact, anything to do with Syncing is basically a black box.   You can do some investigation and/or track the numbers if you take extreame care, but IMO, the decission by Adobe to make syncing a black box is a poor one.    I will also say, Syncing, durring migration and ongoing is exceedingly slow and it is difficult to understand why (a review of your computer specs and network specs will not give you a good answer because its all in the black box which has its own algorithem which is, as black boxes are, totally opac).   

That's  the bad news.   The good news is, with time, the syncing usually clears, but you have to give it the time it wants (lots of time, think 3 to 5 times longer then you think is reasonable).  Mine took a full week of computer churning.   Eventually it all got there and I was able to confirm all files made it accross.

Overall, the power and access of the cloud capabilities can be a huge benefit, but you have to be exceetingly patient with the sync process (IMHO).   

I have considered going back, I actually maintain both LRC and LR as linked catalogs (its tricky but can be done).    But the power of the Cloud keeps me with my "Master Catalog" in the Cloud (ie I consider LRC to be a slave to the Cloud). 

I have a similar issue, I'm uploading from a hard drive and all I've got are spinning blue circles on all of my albums. I've no idea of the progress of the upload. Whether to continue, stop etc. I have different images counts on my Laptop to my IPad yet its supposed to be synched in the cloud. Help!

You can see the cloud contents by signing in at lightroom.adobe.com.