Wikpedia is a font of information on the history of the creative team for Y&R. Interesting tidbits of information from the early days of production techniques to the ascensions and retirements or resignations ofwriters,directors and producers are available.
It seems with the Retirement of Y&R's Creator Wm Bell in '98 Kay Alden took over his duties as Head Writer and was relieved of her duties by a Ms Brooks of CBS and replaced by Lynn Latham in 2006.
Until Lynn Latham's ascension , Wikpedia states, the creative crew at Y&R was renowned for being a close knit family. All that changed when Lynn Latham was given the Head Writers position. 20 year veterans in the directing , producing and writing areas resigned or were fired. Kay Alden guit, Smith's contract wasn't renewed and Kay Foster resigned - all creative forces that had been with the show since inception.
In 2007 when Lynn Latham was relieved of her duties (fired) a 20 year veteran of Y&R who had been fired by Latham returned - Mike Denny ,as did Janice Esser a writer.
It was Lynn Latham who employed the use of retcons to enhance viewers and ratings specifically, Katherine as Jill's mom and the PC II and Jill's baby switch.
Use of retcons is continuing; changing histories, ages of characters and events to retrofit new or changing storylines. Josh Griffith - who took over Lynn's position was replaced by MAB & Paul Rauch and their episodes began in Oct 2008. The retcons continue to this day.....and there are sooooo many more! An empty grave and PC III being alive....Cane's whole background and DNA results are too messy to unravel...think in Cane's case it is not a retcon but a PLOT HOLE that can't be plugged! Another is Katherine NOT BEING JILL'S MOTHER.
MAB is also responsible for bringing back old characters and revising their identities and giving them s/l's...we have seen a few....and more are on their way.
I cannot agree that the characters have not been compromised in MAB's endeavor to restoreY &R to it's Glory Days The return of characters from long ago are wonderful.....Retcons are not always welcomed and when they don't make sense the result is a weaker show and up pops a PLOT HOLE. Characters are now only shadows of their former selves and some s/l's are too disappointing to be acceptable to long time viewers.
Anyway.....it seems no one...neither Latham or MAB can spin the magic the creator did for so many years Wm Bell! Let's see if the return of veteran producers, directors and a writer or two can help sprinkle some magic dust around!!!