i see this in the wider context of “we will not regret the past nor wish to shut the door on it”, where it is juxtaposed or added to the not part.
for me, it refers to the slamming a door shut onto looking, ongoing “learning”, discovering our part, from events and actions in the past.
i know quite a few people who do not wish to look at painful past events and their own behaviour. who think they CAN’T look at that. they lock it inna vault. or want to.
the promises told me that with taking responsibility fir my part, there would be no need to shut the doors or refuse to deal by concreting it off.
and i have found that to be so.