Synchronization is one-way: An American Centuries record can be updated (that is, ‘synchronized’) with metadata from its corresponding PastPerfect record in the museum’s catalog. PastPerfect will never be updated from changes made to the corresponding American Centuries record, unless you hire PastPerfect to upload data that you provide to them from American Centuries.
Synchronizing a single record or a batch of records
Where PastPerfect metadata is stored in WordPress