FIrst edit your A chart to not include the resource, and add the keep annontation
https://helm.sh/docs/howto/charts_tips_and_tricks/#tell-helm-not-to-uninstall-a-resource

annotations:
    "helm.sh/resource-policy": keep

From this point, your resource is not managed by helm anymore
Clean the resource (annotations...)

Then import the resource so it's managed by B chart
https://jacky-jiang.medium.com/import-existing-resources-in-helm-3-e27db11fd467

Additionally:

Ctrl-y Moves screen up one line
Ctrl-e Moves screen down one line
Ctrl-u Moves cursor & screen up ½ page
Ctrl-d Moves cursor & screen down ½ page
Ctrl-b Moves screen up one page, cursor to last line
Ctrl-f Moves screen down one page, cursor to first line

Ctrl-y and Ctrl-e only change the cursor position if it would be moved off screen.