Alteration of moa- authorized capital

A was company incorporated in year 2005 under 1956 Act. Now the company wants to increase the authorized capital from 5 lakhs to 25 lakhs. My query is regarding drafting of altered MOA as attachment to SH-7: -A lot of changes have occurred in the format of MOA & subscriber sheet of the MOA under the 2013 Act. So while preparing the altered MOA, should we draft the MOA & sub sheet (with photo) as per the new 2013 Act or the Original MOA of old company will be taken and just the clause V will be replaced? Secondly whether any new subscribers can sign the altered MOA ? if the share holding of the original subscribers was say 10000 , but as on the date of alteration the original subscribers holds only 2000 shares then what should we do ?