A civil suit which is dismissed in default can be restored to its original No. by filing an application under order 9 rule 9 and the court after imposing some very reasonable cost can restore the suit back to its original No..
It is important to give a brief descripttion about what was the suit and as to why there was no presence on behalf of the plaintiff and also a declaration that you undertake to be more careful in future.
Limitation is one aspect which is to be considered while filing the present application for restoration and the date of knowledge is very important in these matters.
Be careful in drafting the application.