[whpalmer4]

One helpful tactic is to add an item to the Inbox on one of the devices. Now sync all of the devices, syncing the one where the Inbox item was added first. After doing so, all of the devices should now have that new item. If they do, you know that sync is propagating changes successfully. The way the sync works, it isn't possible to get that last item without having gotten all of the earlier changes. You can also check the Show Clients display in the Sync preferences on the Mac to make sure that the other clients have successfully synced; if they appear to sync without trouble, but the client display shows they didn't sync today, they may not be syncing to the same place.

If a change still doesn't seem to be present, the next thing to check is that your view settings aren't preventing you from seeing it. Tap the eyeball icon and select All Actions, or use the All Items perspective if on the Mac.