not downloading originals after moving library to external drive

Hi there,

I've just moved my Photos library to an external hard drive using the procedures described here: https://support.apple.com/en-us/HT201517

Then, I designated the library located in the external library as the new System Photo Library as described here: https://support.apple.com/en-us/HT204414

After step 6 from the link above, there was a dialog question about saying: "Any photos and videos that have not been fully downloaded will be removed from this Mac and Shared Albums will be disabled." I clicked Ok.

--> This dialog box is Undocumented! <--

After selecting OK, I selected the "Download Originals to this Mac" options in the Photos preferences menu. The reason why I changed my library to an external hard drive is because I want to create a copy of it.

So, I would expect my Photos Library file size to grow, since it is supposedly downloading the originals. However, it is actually *decreasing*. When I check on iCloud.com and on my iPhone all my photos are there. I left the computer on as well as the external drive expecting to have the originals downloaded at night, but no luck.

Did I delete all my photos? what might be going on?

Thanks!