Hey people! Here are the re-deployments seen as of today and
yesterday.
TIB446E
(KJDEP 700
WLDEP SP)
On 178 today.
TIB471G
(KJDEP 700
WLDEP SP)
On 178 yesterday.
TIB474Z
(KJDEP 700
WLDEP SP)
On 178 today.
TIB477R
(KJDEP 176
WLDEP SP)
On 961 today. 
It's noted that the ex-WLs from KJ are coming back to WLDEP. :)
But, somehow, it's targeted at expired advert buses, indicating
Biscuits World and Nikon D700 is expiring. But, that does not
explain for 474Z.
Anyway, something interesting. On Saturday, NONE of the perm
buses from former WLDEP did 700, except 740E. But today, 556X,
546A, 728S, 433S and 468S are seen on 700. 442R and 738M on 75,
469P and 443M are on 184. 727U and 472D are missing. 809S is
presumed to be on 188 tomorow.
I don't think it is the case of expired ads, unlike SBST's
practice. I still remember TIB576M that got the Panadol Flumax ad
when it was still on perm AMDEP 171, after which it got redeployed
to service 854 and in less than 2 weeks got transferred again to
WLDEP. Till now the ad is still there.