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Scan Reorder issue

Vishnu Chada

We have a scan connection as follows :

               FF1(from Q,SDFF)   -----------BUF ---------------FF2 (to D , DFF)
                                                                                 |
                                                                                 |
                                                                                 ________(to other logic)


Scan def :

+ORDERED
        FF1 ( IN SI ) ( OUT Q )
        FF2  ( IN D ) ( OUT Q )
+FLOATING
         ---
        ---

When i do scan reordering the tool mess with the functional path which is shown in above representation.Connects that entire logic to other flop, which is caught in lec.It does not honor the ORDERED section properly.Is there any known issue where encounter has problem handling Regular Flop (with D input as part of the scan chain) in the ORDERED section instead of a ScanFlop ?

Tried using 7.1 and 8.1USR3.

Appreciate your help.

Regards,
Vishnu

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