Restricting User access to certain areas of QB

I'm really, really reaching with this question.  My gut says no all the way.

Client has two bank accounts - one for the property manager which is an operating account, and the other for the owners which is a general account.  The operating account, of course, is for daily operations of the hotel.  The general account is being used to stream cashflow into the hotel, which is currently operating at a loss.  The owners do not want the property managers to have access to any of the information in the general account.

Client is keeping two sets of books - one operating, one general.  For tax purposes we must combine them.

Ok, Cake.  There's only 20-30 entries in the general account per year so I can use an accountant's copy to get those entries into the operating copy of QB.

Problem - the owners do not want the property manager to know about those few entries, so....

Is there any way to selectively import a period of entries from one QB file to another (I have asked this already of q2q software people) so that we can merge the two files every year?  Otherwise what we end up with in our Cake situation is adding the general account to the operating account BUT NOT returning it to the property manager (so he cannot see it) and we get a cumulative effect from year to year having to re-invent the wheel.

Any ideas ?  (other than Drop the Client, since that is not an option --- drat )