Problem with Mail merge - spacing for a blank field

When I do a mail merge of addresses in CorelDraw X8, I’m running into an issue.  On my address file, some records have a second address (I.e., suite number or apartment number) and some addresses do not have a second address.  When I input the fields into my file, I insert address 1 and address 2 fields. The records without a second address leaves a blank space.  How can I tell Corel, to not leave the blank space when there is no data in the field on the CSV file?