I'm not sure if I understand the question correctly. Which data would you like to keep when stopping a practice? If you'd like to save all lap times of an event, you'd need to have a qualifying or a race, which would allow you to save the data to the history afterwards (see this section of the manual: https://www.smartrace.de/en/the-smartrace-manual/after-a-race-ends/).
#2From @pneilddroidgmail-com28.01.2019, 16:07
Thank You Marc. I was kind of hoping there was a "trick" to stopping a Free Practice, and being able to save the data, without the formality of Qualifying or Racing. Much of my time with the track, I would like to document events that happen. These events would be things like lane departures on different parts of the track and other things that happen. Having a stop / save button at the bottom of the screen would be a very nice feature for that. Please send me an email address where I can explain more fully (with videos) of what I would like to document with the use of Smart Race.