Hello dlyngard,
It sounds like you may not be giving it enough time for iCloud Drive to sync the changes made to the Pages documents, according to: Use iCloud Drive with Pages on Mac
Tips for managing documents across computers and devices
Here are a few things to keep in mind about using iCloud to manage your documents across devices:
- If you edit and then close a document when you’re not connected to the internet, you see a cloud icon next to the document in the Open dialog on your Mac. The next time you connect to the internet, the edited document is synced to iCloud.
- If you edit a document on multiple computers or devices and don’t allow time for your edits to sync, you will see conflicts. If you do get a conflict, you can choose to preserve any or all of the versions. (This applies only to documents not shared with others.)
- If you delete a document that someone shared with you, it’s deleted from your iCloud Drive and from Pages on all your devices. You can click the shared link again to add the document back to your iCloud Drive, where it’s again available on all your computers and devices with iCloud turned on.
- If you use folders to organize your documents on one device, the same folder organization applies on all your devices.
- If you add a password to a document on one device, it’s required to open the document on all your devices.
With this information in mind, are you connected to the Internet on this MacBook Pro? If you give the changes time to sync, do you see the updated changes on the document when you reopen them later on? Do you use any security software or VPNs on your Mac? We ask because these may block the connection to Apple's servers.
Looking forward to hearing back, cheers.