[Help the Pact reach the graveyard outside Zaishen Antheneum]

I read that, but I can't get it to fail, as the 4 Pact members get healed to 100% automatically, if the receive lethal damage.

[Help the Pact reach the graveyard outside Zaishen Antheneum]

The dynamic escort event 'Help the Pact reach the graveyard outside Zaishen Antheneum' seems to be heavily bugged.The event is active, all 4 Pact members have the Escort-Shield over their heads, but they won't move from the starting point at the Elysium Beach. I tried luring enough enemies to kill them but when they get the lethal blow, they get healed to 100% health.I need this mission for completing the Bolt I colletion.

Could you please fix this?