problems modifying exchange distribution groups now they are moved to 2010

users are complaining that they cannot modify exchange 2010 distribution groups even though
they are in a group that has permission
under the properties of the distribution group the managed by field shows a red x and says object not found
i have seen something somewhere that this is maybe a bug in 2010 exchange
how can i fix this
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Simon Butler (Sembee)ConsultantCommented:
Have you removed the legacy versions of Exchange?
If so then you can upgrade the groups to Exchange 2010 version:

Get-DistributionGroup –ResultSize Unlimited | Set-DistributionGroup –ForceUpgrade


Please see the link below for clarification:

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dougdogAuthor Commented:
no i have not removed it yet
but even i upgrade the group
i still have issues
dougdogAuthor Commented:
is this the only work around
if you have around 200 distribution groups that change often every week
this would create a lot of manual intervention
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