[Therion] drawing map over xvi: best practices requested

Hello Possible two workflow for drawing map over xvi: First: 1) integrate new centerline in whole cave (loops closed) 2) process whole cave and export xvi 3) draw over xvi 2) process map Second: 1) process only new centerline and export xvi (no loops) 2) draw over xvi 3) integrate new centerline in whole cave (loops closed) 4) process map Pros/Contras for each approach? Maybe possible another right way? -- WBR, Vasily