Sometimes titles get moved to different catalogs, or you may want to create new collections for accounts including titles that you’ve previously made suggestions for. You can clear suggestions carried over from previous catalogs or Markups by going to your current Markup and selecting the account you want to clear on your Markups toolbar, then select Other Actions > Select All > Remove Suggestions.
Or, check off the specific title(s) you’d like to clear suggestions for, select Other Actions > Remove Suggestions.
Note that this will clear your suggestions from these titles from all catalogs/collections/markups for the selected account, and the only suggested quantity your buyers will see is the most recent number you’ve entered.