Double "set_location_assignment" in .QSF-file after a back-annotation

Hello,

has anyone an idea why the QuartusII puts 2 almost identical

"set_location_assignment" statements in the .QSF-file after a

Back-annotation:

------ snip -------

set_location_assignment PIN_A11 -to FL_D[7]~7

set_location_assignment PIN_A11 -to FL_D[7]

set_location_assignment PIN_B14 -to MX2_D[2]~2

set_location_assignment PIN_B14 -to MX2_D[2]

------ snip -------

QII/V7.0 also with QII/V6.x

DEVICE EPM570F256C5

QII doesn’t care about this, but if you use this file in the MENTOR I/O Designer

(like we do ...) the I/O Designer fails and you have to edit the .QSF-file manually.

That's really painful.

Is this a feature or a bug or simply a user error? :(

Kind regards Frank