Hello,
I noticed that when I try to copy a relationship from a LDM model A as a shortcut to a LDM model B the value from the Parent field (Properties windows->Joins tab) isn't copied, appearing with the value "<None>".
Consequently, if I generate a physical model as "DBMS set to IBM DB2 UDB 9.7 Common Server", from model B and then try to generate the SQL from the physical model, I get an error because the "Parent" field is set to "<None>".
I tested with both PowerDesigner 16.1 EBF11 and PowerDesigner 16.5.
Kind regards,
Bruno Silva