Engage keeps flagged leads for review. In CRM, use Junk only to find them and open a lead. Choose Not junk to clear its flag, subject to your access to the lead.
Public intake can flag a disposable email address, an implausible phone number or a recent duplicate. A filled honeypot can also flag a submission. Manual and API creation and CSV import apply the implausible phone check. The checks differ by intake source.
No. Clearing a junk flag does not replay the skipped intake conversion. Later stage changes follow the normal rules. Admin Ad Sync and its connection controls are not available on the new-look CRM page yet.