Board Thread:Spoilers!/@comment-26159109-20160301190120/@comment-24674051-20160503210328

Except that Rumple gave Belle a potion in Swan Song that would protect her crossing the border, and then told her to get out of SB and explore the world. So obviously Rumple (even without Magic) was able to concoct a protection potion against whatever the Border does these days. If he did it once, he can do it again (and again). Plus, Belle never used the first batch that he made.