Hi,
You need to fill only the same date in remaining forms (i.e. wrong date as filled in Form 66 in order to
enable the system accepts the filing).
Prior to filing, it is advisable to enclose a CLARIFICATORY LETTER
(suitably mentioning the specific fact(s) of the matter) to the respective form or
even in remaining forms as optional attachment and
just file it, as there is no alternative to such situation.
Hope, there should not be a problem, as the Forms are STP and as far as the RoC is concerned,
the CLARIFICATORY LETTER in the forms will be self-explanatory to the authorities concerned.
Thanks.