
This PR would presumably Fix #20522 Fix #18773 Fix #19069 Fix #21077 Fix #13622 ----- 1. Check whether unit type is currently enabled 2. Check if it _will_ be enabled via opt 3. Allow modification as necessary Signed-off-by: jolheiser <john.olheiser@gmail.com> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com> Co-authored-by: 6543 <6543@obermui.de>