Renewal of loans against 6 racing yachts (FS)

The renewal auction, 1997845114, commenced at noon on the 18th December.  Normal renewal practice, as I understand it, is for the return of capital to departing lenders to be accompanied by interest to that same date.  But, whilst capital for the original yacht loans  970348863 and 1351896395 was repaid that morning to those lenders not rolling-over their funds, interest was only paid up to 29th November.  This is listed as the "actual end date" and, presumably, is when the borrower actually paid the interest to FS.  Participants in the renewal auction, 1997845114, will earn interest backdated to the 30th November.  This backdating is mentioned in the renewal loan description and the announcement email, and thus seems a deliberate ploy. 

I suspect that fundingsecure have arrived in this position accidentally, having been unable to arrange the renewal for 30th November, and have not fully thought through the consequences.  The net result is a bizarre subsidy from lenders who chose not to roll-over given to new lenders who take their place.  There are now four classes of investor in these yacht loans:

• Those who, like me, chose not to roll-over from 1351896395 had capital tied up for 199 days after the "date made active" receiving interest for only 180, reducing their expected 13%  annual rate to less than 12%
  
• Those who chose not to roll-over from 970348863 had, I presume, their capital tied up for 77 days receiving interest for only 58, reducing their expected 13% annual rate to less than 10%
  
• Funds rolled-over will earn continuing investors the expected 13% p.a.
  
• New investors will get a greater annualized return, benefiting from the backdated interest

If I choose not extend my original contract I don't expect to be penalized for that choice and I have complained to FS.  Meanwhile, despite the increased rate on offer for new money, the yachts seem becalmed.