Thanks for the reply. If I go to Setup->User Preferences and select the Drawing folder there is a database_compatibility_mode field. It is blank, but if I click on the pull-down arrow it shows a 17.2 option. Since the field is normally blank I assume that I am not selecting that option. If I select the List All button there is no entry for database_compatibility_mode. I don't see anything that looks relevant under the Unsupported folder.
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