Not sure what this really has to do with downgrading a route mind but surely

08:00 - X71
09:15 - X72
10:30 - X72
11:45 - X71
PVR 5

08:00 - X30
08:45 - X30
09:30 - X31
10:15 - X31
...
PVR 3

X45 Standalone
08:00 CON
09:15 NEW
10:30 CON
11:45 NEW
13:00 CON
PVR 5

Would be the better allocations...

6356 - 6360 - X45
6362 - 6375 - X1
6301 - 6307, 6361, 6376, 6377 - 50 / X1 Spares
6331 - 6333 - 21 / X21 Spares
6344 - 6352 - X30/X31/X70/X71
6338 - 6343, 6065 - 6068 - X5/X15/Spares

It makes much sense than moving B9's and B5's around for absolutely no reason painting everything again.