Persisting SubVI Selections during Runtime.

I'm using an instrument from Keysight, and creating a simple VI for taking measurements. 

I am wanting to create a SubVI that allows you to select multple configurations for this instrument so that if the user doesn't like the default configurations he can go in and alter them by clicking a simple "Configure" button. 

Currently my code passes in the VISA and opens the Configure SubVI, and you can change the configuration of the instrument, but when you close the configuration window it closes the SubVI and then if the user then wishes to open the configuration window again all the defaults are loaded and the previous configuration is lost. 

Is there a way to persist decisions made by the CURRENT user of the VI during the time they are using the VI, without completely changing the default selections of this SubVI? Perhaps just hiding the VI and showing it again if needed? 

I was wanting to use a AE but there are so many inputs/outputs that it wouldn't really work for me unless I'm missing something.

Thanks,

Kellen

Measure VI

Configure SubVI