Although at the time of filing the First Motion it was mentioned in the Joint Petition that both parties ` have settled their disputes and respective claims, including past, present and future`. However now if I am not going ahead with the Second Motion and after the expiry of the time limit will this petition become null and void or will it continue to serve as evidence in future too i.e. no future claims can be made by me.
The one what you have written that both have settled your disputes and respective claims, are nothing but routine contents, so you need not worry about that aspect.
If you are not appearing before the court on the date of second motion, the court may give one more chance by posting it to another date and if still fail to appear on the second date too, then the court may decide to dismiss the petition.
Whether it will used as an evidence for future case too means, yes. In the question whether you have applied for divorce in any court earlier, you have to give suitable answer.