These have been fixed (I'll do more when I get time):
https://tm.mania-exchange.com/tracks/9095/ademix-v1
Updated broken blockmixing near the finish
https://tm.mania-exchange.com/tracks/8962/ak-dark-amp-light
Map still finishable, but start jump made it more difficult/less smooth. Removed pre-MP4 records.
https://tm.mania-exchange.com/tracks/view/8803
Changed the start jump so that it works again.
https://tm.mania-exchange.com/tracks/view/7241
Changed reverse turbo with custom block that mimics pre-MP4 gameplay
https://tm.mania-exchange.com/tracks/view/8704
Changed the start jump so that it works again.
https://tm.mania-exchange.com/tracks/view/8925
First jump fixed by removing fence from landing
https://tm.mania-exchange.com/tracks/view/8449
Replaced a missing block caused by converted blockmixing
https://tm.mania-exchange.com/tracks/28128/mini-jay-05
Fixed broken mixing after start jump
https://tm.mania-exchange.com/tracks/view/155995/canyon-loop
Updated to MP4
https://tm.mania-exchange.com/tracks/view/21458
Fixed some missing blockmixed blocks
https://tm.mania-exchange.com/tracks/view/1028
PF map. Hidden since it's broken and no replays are available
https://tm.mania-exchange.com/tracks/view/59061
Fixed the turbo that wouldn't activate
https://tm.mania-exchange.com/s/tr/16863
Fixed the ramp so the map can be finished
https://tm.mania-exchange.com/tracks/view/20942/nur-fr-noobs
Updated to fix the mixed turbos that wouldn't activate
https://tm.mania-exchange.com/tracks/view/21425/mftroad-d
Fixed broken mixing/missing road and fixed broken sign locators
https://tm.mania-exchange.com/s/tr/21447
Fixed some broken/missing blocks. Fixed broken signs.
https://tm.mania-exchange.com/tracks/view/91680/blue-mooh
Fixed mixed turbo that wouldn't activate. Fixed broken signs.
https://tm.mania-exchange.com/tracks/view/90298
Fixed mixed turbo that wouldn't activate. Fixed broken signs.
https://tm.mania-exchange.com/tracks/view/21752/cant-stop
Fixed mixed turbo that wouldn't activate.