Four posts spanning a five hour period one Friday evening......

Four posts spanning a five hour period one Friday evening... then a fifth post a few days later... you've been busy!
And it's an interesting tale you're unpacked. If I've got the colours right, light blue is the more recent application
and dark blue is the earlier applics, now being withdrawn?
Which looks to me like they've refined their area of interest and are discarding areas no longer of interest.
But something has retained - and focused - their interest in the new application. I wonder what?

It will also be of passing interest to see if anyone else picks up the areas they have abandoned...

Pig.