Earlier today (yesterday seeing it is now after midnight) I made some changes and again weird things happened. Firstly the changes I made were well outside my network connection time (last connection was 8:30 AM, next was scheduled for 2:?? PM) and the time I was making my changes were shortly after 10 AM so that confirms my suspicion that it is nothing to do with network connections.
I added a series link (Race of Champions) and promoted it to position 8 as below (I took the screen grab at the end after I had sorted it all out):

A few minutes later I checked my planned recordings and noticed that I had a clash which meant "Not Going Out" was not going to be recorded and as it was not repeated I thought I would promote it further up my list so it was higher than "8 Out of 10 Cats does Countdown" which is repeated. I placed it at position 52 (no particular reason just because I knew it was higher than "8 Out of 10 Cats does Countdown"):

A short while later (5 or so minutes) I rechecked my series links to make sure everything was as expected. This where the fun starts:

If you compare with the first screenshot you can see I have lost my series link at 5 (Formula E) and 7 (Goodwood Festival). Scrolling through the rest of my links I found them at positions 214 and 233:


I left it on this screen whilst I was uploading my screen grabs (to Google drive) when I noticed the screen refresh. I moved to the top of the series links to find that my series links at 2, 3 and 4 (Formula 1, GP2 and GP3) have now moved:

Checking the rest of my links I found them at 183, 193 and 203:



I then left them alone for a good hour to make sure the box had finished randomly re-arranging them before I moved them back to where they should be.
Can this be fed back to the team and some update given. This is just ludicrous that this bug has been around for ages know with no sign of any fix! Who knows what effect this bug could be having on the "databases" that are being used to hold this data.
It makes a mockery of the whole priority listing of SL's as again it seems that several of my top priority SL's were moved near the bottom of the list and this is know becoming unacceptable!
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Services: 350Mb BB, Full House TV (with Sky Sports & Movies) + HD supplement, Talk More Anytime with Caller Display
Equipment: 2 x V6 (connected to Panasonic TX-P42S30B & LG 43UJ701V),
1Tb TiVo (connected to Panasonic TX-L32G20B), Super Hub 3