Changes have occurred in Gehna, Sugna, Shyam also. But I will use Anandi as an example since she's the only one who still have relevant tracks in the show.
Q. Are CVs forgetting the graph made by young Anandi?
No actress can act exactly like another or absorb the mannerisms of another. But the trials faced by the previous character can be used and applied to current tracks.
For eg- When Jagya accused Anandi of trying to pressure him into having a child, she cried. But only because he walked off. When he came back, she gave him a piece of her mind, firmly. No snivelling. This was something that even small Anandi used to do. So why the change today in CV's writing?
Q. Why does Anandi not stand up against false claims with her earlier firmness?
Anandi was always respectful. But when someone tried to usurp her rights, she would make it clear that she wasn't wrong and be firm, yet polite. Now she is the height of diplomacy, crying and trying to gain sympathy.
Eg. Remember how she took on Dadisa when she stopped Gulli's wedding? When she decided to study further? When she came to know about her fix-up with Shiv?
Now she never shows any such honesty. It can't be because of the mayka-sasural gap as she always spoke her mind as Jagya's wife.
I don't want to question Ms Rasputra as she is probably doing what the CVs are asking her to do. I want to ask the CVs why they are changing characters along with actors? Why not direct the actors properly?