NON EU Holders of settled status travelling outside Europe

[Punguru82]

Hi, I've read many threads plus government website but no concise clear answers. Help out please for clear answers only.!!
As Non EU holder of both settled status and Permanent RC to avoid travelling chaos ;

Would that be a problem if am still outside the country(UK) post June 2021 not in terms of length of staying abroad rather in terms of returning back.

Any guarantee the Permanent RC are linked to our settled status? but for how long though if they are linked as mine still got few years.

Lastly would replacement from RC to settled status card now guarantee 5 years at least or only till June 2021 and what other form of ID should be used after?