What is the best procedure to sync Acumatica and Big Commerce?

We have been using the “Fetch” and then “Sync” method in “Commerce / Processes”.  Using this approach we were finding that hundred of items would show as “Pending” even after we Fetched and Synced.  We were told to change our procedure and first “Fetch” in Processes, and then sync using the “Sync Status” process ( and not the “Sync” in the Processes area).  Is this method the prefered way sync?  Should we stop using the “Sync” button in the “Commerce / Processes” area?