Change Script Always Includes Add Table for Two Tables

Toad Data Modeler (v7.3) always generates "Create Table" statements for two tables in my model. These tables were included in the design (model) two months ago. They exist in the SQL Server 2019 database. They are in the same schema as the other tables being modeled. No changes were made to these tables for weeks. However, every time TDM generates the change script, it adds a table with a system generated table name, copies the data from the original table(s) to the new table(s), drops the original table and renames the new table to the original name. There are other tables in the model. TDM does not do this for all tables.

Currently there is no data in these two tables. Is there a parameter somewhere that is telling TDM to generate these tables new each time that it runs?