I figure it out. In the List View I had given the floating text box an object name ( I used Row). The script captures the record number and stores it for the return journey. On the trip back there is a Goto Record/Request to the stored record number, a Goto Field is specified as is the Goto Object (InFocus Row) triggering the InFocus fill colour (in my case yellow) followed by resetting of stored values.
After I wrote the post yesterday I reflected on what I had written and realized I may not have checked my scripts in detail. In the end I found two scrips with the same name which caused part of my confusion. This is visually helpful when returning to the List View. A highlighted row is a lot easier to see than the active record indicator on the left side of the window and makes stepping through a list of records easier as you can see where you were. Good even in a sorted list.