# Synchronizing deletions

Synk can determine whether an item has been added or removed since the last run of the document. This way an item removed from one folder will be removed from the other. Without this special feature, the item you removed would be replaced the next time you run the document.

## To synchronize deletions in a Synk document:

1. In the Settings tab, check the "Synchronize deletions" checkbox.

Information about the previous state of your source folders is stored in the catalog. Learn more about the catalog.