Questions about collections and issue tracking

My questions:

- Should I close issues and PRs on ansible's main project and open new ones on collections' issue trackers?

- Will there be a massive issue/PR migration from ansible's main project to the new collections?

When the issues/PRs affect 'moved' code, yes to both.

The bot should already be labeling issues to be moved with the target
collection, but we won't do a move until we are happy with the success
rate.
Until then we encourage you to manually close/open issues as appropriate.

There will be no mass migration/move of issues or PRs. PRs and issues will simply be closed, and up to the submitter to migrate or re-submit.

https://github.com/ansible/ansibullbot/blob/master/docs/collection_migration.md#how-do-i-migrate-my-issue-to-another-repo