If any program can somehow convert .zdb files to .zdl files, it would be DesignPro label and business card making utility from which both of these files originate. Whenever zdb to zdl conversion is actually useful or even really possible could not be reliably verified. It may be possible that zdb is a format used in some older versions and it was replaced by zdl files in the latest versions.
Updated: October 5, 2018
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