Viscount 702, I checked the web site just now for dates in July'15 and the 3 Wed/Sat. routes you mention are still showing as bookable and the other is there for Mon/Fri.
Unfortunate timing by the looks of it.
When I was checking PSA and MRS were not loaded as to timings and the three destinations were showing no flights. They are as you say all now showing. I note the JTR only runs from 17 June and this replaces SKG on Wednesday which goes from 3 to 2 per week.
What is clear now is that most days 9 based frames are needed. That suggests bearing in mind the gaps that more flights could be coming.