As I showed you the video in discord for the first part of the question Discord , to do that i did this :
A) create a wipe preset and make sure to add (“tb”:0) so the effect will start correctly
B) Create a preset with solid color to match the end of your wipe
C) Create a playlist and add the wipe preset , set the repeat to 1 and End preset to solid preset
You may need to adjust the timing a bit to match the number of leds
wipe.txt (598 Bytes)
The second part of you question did not be work correctly if you select revers in segments . My guess it could be done with ledmaps but I have no time to test that . Good Luck