The problem was I got a monopoly warning for the inbound route though..so can plan it but will get fines for it.
How many flights a day do you have? As long as you only have 1 in each direction there should not be an over supply warning unless something has changed. The last I heard is the anti monopoly warnings did not kick in unless 2 or more flights totaled 200% of daily demand (1 flight gives you no frequency advantage so no need for anti monopoly measures regardless of aircraft size).
If you only have 1 flight per day, verify that all 7 flights in each direction leave on a different day (ie, if you have a flight that operates 12345_7 and another that operates on just 6, make sure the return leg of the one on 6 doesn't leave on a different day than the return leg of the 12345_7 flight which would trigger the warning) and if you do have 1234567 in both directions submit a bug report with screen shots!