Yes, switch off all other indicators and leave those you want (isn't this the purpose of indicator selection for?)
I've tested it out on my side and it works.
I've deleted all other indicators and only have "Do Not Exit" as my only indicator.
I make sure my Preset doesn't have any other exit indicator that is not "Do not Exit" cos if your preset has other exit indicator, it will use that exit indicator.
There are max 4 entry rules and 2 exit rules. If your Preset Indicator already has the Max entry and exit rules, the Generator/optimizer will remove the last rules (entry and exit rules) and replaced it with a new search (otherwise what's the point of generating/searching for new ones if your preset occupied all the available rules).