Wowhead💙 on Twitter: "In #Shadowlands, you can no longer change raid difficulties when inside a raid. This change has a negative impact on mount farmers, as this breaks a popular lockout saving
How to Unlock Heroic Mode for TBC Dungeons?
World of Warcraft Hotfix Removes Daily Lockout on Heroic Shadowlands Dungeons | MMORPG.com
Suggestion: show which dungeons we're locked to in LFG : r/classicwow
Lockouts and Resets in World of Warcraft - Guides - Wowhead