Thank you for any advice on how to do the following ...
List a found set in a related Card Window, then go to the selected record form without altering the overall found set.
The is, for example, navigate to record #7 of 20 found records.
Two table occurrences, with the second being a self-join via the found set's collective UUIDs.
GTRR does not work because the self join's basis is the found UUIDs not a specific record identifier.
Process in more a bit more detail:
(1) identify subset of records in main form window; (2) move to Card Window to review list of said records using portal relationship; (3) select specific record of interest; (4) go to that record in the found set of the main window to view.
Do so without disrupting the found set: eg, doing an altogether new find based on the chosen record UID.
An alternative is to do a search that results in two main windows in the form view, not one. The first window shows the original found set; the second, based on a find routine, shows only the selected record's form.