If you use the flight recorder/VCI data record/log to get as much accurate data as possible, in the same way you will ride the bike, you should be ok blending via copy/paste (of valid data) 1 or 2 rows/columns outside of the captured area.
I have had guys report issues, because they did their data recording runs solo, and had issues with a passenger, bags & gear, so loaded down. IF you're always solo, you can do your autotune basic/smart tune/Vtune solo and be adequate. If you will have a passenger, then do recordings two up. If you may tour, with "all the stuff", then do the recordings that way. I've found (absent a dyno, where it's easy to hit the majority of cells) that loading "all the stuff" with the usual passenger, and riding hills & neighborhoods hits enough cells, enough times, to make a decent map within two to three iterations.
You can't get valid autotune VE data @ 6000 RPM/5% throttle, or 1000RPM/100% throttle- areas high & right, and low & left, on the VE table, just like warm up fuel, have to be manually adjusted using wideband sensor data.
