Facing a problem while opening old format file in 4.0

Greetings,

I have an old .frm file which I am tring to edit.

I can open it in Creo Parametric 4.0 but it does not allow me to edit it.

Does anybody have a solution/work-around for this?

Best regards,

Madhavi

12-Amethyst

can you not copy/paste the entities to a new file? sounds like a corruption that you could get PTC tech support to fix otherwise.

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