Okay Mrs's AJU's SG transfer from Invest to ISA has completed - I assumed it would arrive as ISACore with SG cover but in fact it is "Zopa Classic" under the ISA umbrella.
The general time window is as follows.
16/1 11:46 Email prompt that transfer will happen in 2 working days.
18/1 PM Lost all access to both Invest and ISA data on Mrs Aju's account
26/1 18:05 Email received to say all is completed. 23p short of full allocation
So what actually happened under the hood.
In invest Zopa Classic Side
18/1 @14:02 535 loans are sold by rapid return @ approx 20-22 loans per minute and Values does not seem to be a factor. (Probably pre loaded or something)
18/1 @14:32 All loans for transfer have been sold - averaged at 17.83 loans a minute.
In ISA Zopa Classic side
18/1 @14:02 Loans start buying.
18/1 @14:30 all loans are bought up and fully invested.
I'm guessing Invest and ISA transfer platforms were not clock synchronized as Mrs Aju seemed to buy 1 ISA loan before they were all sold from the Invest side!.
The most interesting and also annoying thing is that 3 loans were closed within 5 days of purchase with one loan only lasting for 30 hrs before closing. Good thing is though I got 5p interest from these 3 loans all told!.
The really annoying thing is that my statement analyser does not deal well with rapid returns so that's a bit of work I will have to pick up. Also it seems that a few of the new loans are already in Mrs Aju's existing ISAcore book as well but not really an issue with SG cover.
Now all I have to do is wait for my invite to transfer.