Reuse and syncing won't be able to update a field if it is tied to a Workflow. To check on this, go to Admin > Workflow > Enable workflow for this organization and see if a) workflow is enabled and b) the item type you're trying to sync has a workflow established and what field it is set up on.
To not see this error, you'll need to toggle the Synchronize checkbox of the fields that reflect the Workflow status to off. You can find that field in Admin > Item Type > Config. Then select the Workflow field (usually Status unless it was changed) and toggle off Synchronize. This will disable the field from triggering Out of Sync if the status is changed on one end of the sync.
You can also turn Workflow off temporarily by going to Admin > Workflow > Enable workflow for this organization before resyncing the projects.
Let me know if this works for you.
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