1st will found doubtful but property has mutated by 2nd will

Please indicate whether the WILL by A was registered or not.

When (in which year) did CCCC challenge the WILL?

Registration of will is not important as that is not mandatory. File appeal against the judgment of the court in favor of CCCC and also probate the second will. Note that doubting the first will can not affect the second will if it is genuine, let the appellate court decide the entire matter in appeal proceedings. 

Sirs,

Both the Wills are registered!

Thanks Advocate SN K Assumi Sir;

Your opinion appears to be so right and suited.

Pure hypothecated academic story, otherwise consult your lawyer contesting the case.

Thanks Dr Vashista Sir;

It is Pure, Not Hythecated! The 30 years old case was remanded by H'ble High Court and the case pertains to 'A' not to 'BB'. The judgement has been delivered by the trial court against "A" not "BB". 
It appears that "BB" has no cause for action or locus standii until and unless the jugment is implemented and his land, so aquired form 'A' is given to 'CCCC'.
Your views please!
Thanks 

Preetam Singh Thaku