I have an application that I am upgrading from Delphi 2005 to Delphi
2007. It recompiled without any problem.

I am using IBO 4.x with TwwIBOQuerys.

I have a Master dataset with persistant data fields and a Detail
dataset with persistant fields, the detail is linked to the master via
the DataSource property. The Detail has 5 parameters that are to be
filled in by the Master.

Neither Query is linked to a another object except for the DataSource
that links the master detail relationship.

The code has a "while not Master.eof do" loop that runs through the
Master records. The problem is that the parameteres in the detail are
not filling in and therefore no data is being returned for the detail.

In debug mode, as I iterate through the loop, all params are blank,
although every now and then one of the params has the correct value
from the master. The rest are blank.

I've checked the spelling to make sure the detail params match the
fields in the master. I've set the parameter type(String, integer,
etc) for each parameter.

This same code works fine in Delphi 2005.

Any suggestions?