How Regulators work.

I understand the basic workings of a regulator. I'm just wondering how it handles certain scenarios.

We have two people as an example.
Bob who doesn't wear a regulator and Timmy does wear one.

Scenario A:
One day Timmy dies for good. If Bob starts wearing a regulator after that, will it remove Bob's memories of Timmy, or will he still remember Timmy while only forgetting the people who died after he started wearing it?

Scenario B:
This time Bob who doesn't use a regulator dies.
Would Timmy's Regulator make him forget Bob or is the regulator only able to register the deaths of other regulator users?

To sum up my questions.
Does the Regulator scan and remove all memoires of death no matter what? Or can it only remove memories from after the time its worn?
Can it remove the memories of anyone that dies from a user or does the dead person have to also have a regulator for it to register?

In Scenario A, no, it only removes memories at the time of death. We see this with Yaana and Neyuni in the Arcadion questline. Their parents taught them not to wear regulators, but Yaana and Neyuni both remember their parents even after they started wearing regulators.

In Scenario B, also no. In the Arcadion questline, the President is said to have taken the regulators of "immortalized" fighters so that they die of psychonekrosis still remembered by all of their fans to keep up the illusion that they're simply living in luxury on the upper floors of Everkeep. Both parties must be wearing a regulator at the time of death for the memory erasure of the dead to occur.

Thank you Dikatis. I had forgotten those details from the raids.

Either way, it is creepy how Regulators works. It basically is the technological version on how the life style of the Voidsent from the first.