Code for saving cloned slides of different format as pptx

Need help in cloning slides of ppt and pptx, saving those slides in single presentation in pptx format.I can able to clone slides of ppt and pptx seperately and save seperately, but i can’t able to save ppt and pptx cloned slides as single presentation in pptx format .please help.

Hi,

I like to share with you that we are in the process of developing a unified API for managing the PPT and PPTX presentation together. An issue with ID 13419 has already been added in our issue tracking system to accomplish this task.

We are sorry for the inconvenience.