Return to your starting context and repeat the GTRR.
You could create a new window before the constrain and the close the window when done with the report.
Thanks. I wanted to avoid that approach. I may have to.
What version of FileMaker? This is an opportunity to use the "List Of" summary field feature of FileMaker 13.
Excellent idea, Bruce! "List Of" is a gem of an addition to the summary field types — and quite fast, too.
Personally, I'd probably opt for ch0c0halic's approach as being the cleanest, and simplest to implement, unless I had a particular reason for not wanting to open a second window.