Terra Jailers not dropping any Data Key after prolonged time on the Vallis

[Duality52]

After the first or second time doing the "Solaris Liberation" bounty stage where you free the Solaris from their holding cells, the Terra Jailers will drop the Data Keys fine. Those keys are used to speed up the process of freeing the Solaris and needed for the bonus objective.

But after sequential Bounties, no "exterminate" marker is placed onto the new Jailers which means that they can't drop any Keys. I'm not sure if it had to do something with any Jailers still alive when the Bounty gets finished that the Key gets wiped from their drop table from previous Bounties. This also means that the Bounty can't be sped up nor can you do the Bonus objective anymore.

[XetTan]

Experienced this twice, first time was on a 2nd bounty run in vallis, Second time was on the first bounty run.