Removing blank records
Sometimes the data you want to import is incomplete, resulting in the creation of records that contain no properties. On the Import Details page, you can choose whether or not to remove blank entity and link records.
Your incoming data might not have values for some of the assigned properties in your import specification. To prevent the unnecessary creation of these chart items, the default setting for new import specifications is to remove blank entity records. You can set the options in your import details to also remove blank link records. You can also decide to only remove blank link records, or you can deselect both options.