What is causing the callouts to not be retained after saving and reopening designer file?

When I open a saved designer file (one that I have created) in Corel Designer that contains callouts, the callout style has reset and the text has vanished. This also happens when I save the designer files as a CGM. For what ever reason, when I save my designer files or convert them to CGMs the callouts are not retained properly and need to be redone. Anyone know how to prevent this from happening?