Help... music platlist question

Restore your iPhone, iPad or iPod touch from a backup – Apple Support (AU)

The phone will have to be erased first, as per step 1. It should take about 30 mins to 1 hour to restore. Just remember that any changes you've made on your phone since the time of the backup will be erased. Good luck.

Sorry, but it's not possible.

That's possible. If you do decide to go down that road I'd be interested to know the result.

See: What does iCloud back up? – Apple Support (AU)