Change retention category on archived items

Hello everybody,

I need one clarification since I was reading different answers on different forums and articles.

I have implemented FSA Enterprise Vault for file archiving.

My colleague which was installing EV at beginnig set default Retention Category for all archives (default category state that all archives are preserve forever)

I was thinking to change retention category to 10 years, so my question is, how it's gonna affect on current archives?

Are they gonna get new setting (ID) from new retention category when new tas run, or they will keep their current retention settings?

Thank you in advance