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Hello all, In the Constraint Manager connected to Allegro Expert 14.2, after I creating a match group in Net->Routing->Relative Propagation Delay wooksheet, adding some pin pairs to this new match group, and setting the scope, delta:tolerance and target, I close the Constraint Manager. I open the Constraint Manager again. I change the target to another pin pair in that match group, then I find the attribute ""parentGroups"" of the old target disappeared. What's wrong? Thanks. Tom
Wow! 14.2 is real old now... :) You may want to run Tools > DBdoctor to make sure there is nothing strange in the database. If that doesn't help, you may be forced to move to a later release (15.2 or 15.5) since 14.2 is not supported anymore plus you can take advantage of new features in these releases. Sorry I don't have a better answer for you. Maybe someone else does. Good Luck!
oh, it's too disillusionary. :(