It appears from Jason's messages and from the IBO source code that IBO
attempts to dymamically determine the parameter ordering. If this is
so, and is working properly then shouldn't I be able to set the
OldParameterOrdering to 1 on the server and have all versions of my
program work correctly?

I recognize that this would not be the preferred method since any
non-IBO programs may have problems with the non-standard ordering. I
looked through our old source code and don't see any instance where we
use IBO to get more than 1 parameter back from an "Execute Procedure".
So does that mean we don't even need to worry about the parameter
ordering and can just use FB 1.5 with OldParameterOrdering commented out?