Regardless of your opinion (or mine for that matter) about the new features of the Access 2007 format, if the person/customer is required/requested to utilize them, they will lose ULS and Replication. ULS, which is easily cracked anyway, is not a huge loss (my opinion of course), as it gives the false sense that you are "secure" when the app and data are still quite vulnerable, but ULS was/is quite useful in a specific environment (ie: internal departmental use) where the scope of deployment is controlled/limited. Replication is the biggest loss (again, my opinion) in moving to the new format, especially in the situation the original poster finds themself in.
One feature you did not mention of the new format is the VERY much improved database password, which may be enough for folks to move to the .ACCDB format.
But, we don't know what prompted the move to the .ACCDB format for the OP, but that is where they are at ... so ... that is where I will try to assist.
With all that, it does beg the question as to why the move was made to the .ACCDB format. But again, whether we agree or not with the change, it is what it is
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