Method does not exist or incorrect signature while deploying

Hi,

I am getting 'Method does not exist or incorrect signature' error while deploying the code. I have 2 different classes A & B. B has X method in it and A is calling X method.

Before in Prodcopy
X(List)
After
X(Map<>)

I have changed the method definition and updated the parameter variable declartion from list to map. I am trying to deploy both classes at once to Prodcopy. Prodcopy has got old method X with parameter as List. Is this creating a problem while deploy?

Please help.

Thanks
Kumar