Let’s say you have a sword swinging animation and received a request to interrupt the attack. You wish to skip ahead to the “Recoil” section at the end of the swinging attack animation. If you use “Montage Jump to Next Section” you cannot blend between where the animation is currently at and the recoil at the end; there is a visual hiccup. In simple cases, you can weirdly do a “Montage Play” (with “Stop All Montages” checked) followed by a “Montage Jump to Section” (in this case the section is “Recoil”). The result is the animation blending between where it currently is to the “Recoil” section. It uses the “Blend In” setting found in the actual montage asset you are playing. In my case it is set to 0.25.
If you had more than one montage playing then you would not want to “Stop All Montages”. You would need a more clever system than this.