Conversion of Fully Paid shares in Partly Paidup

Hye Folks,

One among several options to reconstruct the co. is to dissolve former one having fully paid up share cap. and form a new co. with partly paid up shares and to call balance amt. from shareholders.

Now, my question is can co. convert its fully paid up shares in partly paid up otherwise than in winding up?

I guess, co. cannot do so coz I didn’t find such provision in Co. law but still I want to confirm it.