Hi GHAR,
Thanks for reaching out to Apple Support Communities. It sounds like you're still having an issue with iCloud and syncing reading lists and downloading items. We'd like to get you in the right direction to assist.
Regarding the reading list issue, it looks like it was previously recommended to check some settings and reach out to Apple Support directly if the issue wasn't resolved. Safari Reading List not syncing between Mac Book Pro and iPad/iPhone
You can also view helpful information in the articles here: If your iCloud or Safari bookmarks aren’t syncing
Keep your Safari bookmarks, reading list, and tabs up to date with iCloud
If the 894 items are photos, were you able to complete my previous recommendations from your post here? Syncing
As you mentioned there were two Apple ID's being used, it's possible there's information synced and connected with one Apple ID that will not sync or move over unless you're signed into and using that account. With Photos, you could make a shared album and save the photos or videos you want. How to share albums in Photos on your iPhone, iPad, and Mac
Be sure to also double check you are using the correct iCloud account/Apple ID on both devices. Change your iCloud settings
Moreover, if you're unclear about the next steps to take or unsure if the Apple ID issue was really resolved reach back out to Apple Support directly to further assist.
Contact Apple Support
Best!