From [url=https://www.bungie.net/en/News/Article/50488]TWAB 2021-07-15[/url]: [quote][b]Activity Streaks and Reputation Bonuses [/b] As noted above, Season 15 will introduce activity streaks. The longer you stay in Vanguard activities (playlists or direct launch), the larger your streak bonus is. Guardians can leave the matchmaking queue to snag bounties from the Tower or clean out their Postmaster in the H.E.L.M. without worry of losing their activity streaks. As a note, quitting activities or going AFK for extended periods of time will invalidate your streak, so be ready to play if you’re looking to keep yours going.[/quote] From [url=https://www.bungie.net/en/Explore/Detail/News/50599]Patch 3.3.0[/url]: [quote]Crucible, Gambit, and Vanguard reputations now use a ritual activity streak system. You gain streak for finishing ritual activities, you lose streak for quitting out or KTOing, and your streak resets if you play something besides that ritual's activities. Orbit, Tower, and H.E.L.M. do NOT trigger a reset. The previous win streak bonuses (aside from Glory) have been removed. [/quote] So, nowhere is stated that rank streaks are reset after resetting rank. I thinks this is unintended.