Return berry death

[polar pecan]

Hello, I have a berry return that needs to go back across a moving block with spikes on it, which seems to sometimes cause Madeline to die on the return trip. How does one prevent this from happening? XP
The specific entity I'm using is the Sorbet helper Return Berry, if that matters

[strong gale]

i guess the being-bubbled state doesn't make you invincible
maybe put an extended variants trigger over the berry to enable invincibility (i think you can enable assists that way?) and one at the spawnpoint disabling it