welcome luxury uses a different title id. if you're using checkpoint to backup/restore/modify saves, make sure you are selecting the correct title.
to modify saves using checkpoint, create an actual backup, then create another backup that you want to modify.
upload the garden.dat from the ACWL backup folder (in /3ds/checkpoint/saves), modify it, then download and replace the garden.dat in the backup with the modified version. then in checkpoint press restore on the modified backup, to load the backup.
i've tested and it seems that the saves are compatible with acwl and vapecord on at the same time.
if you end up corrupting your save by messing with it too much, you can restore from an unmodified backup, if you've made one.