Pilcrow symbol doesn't take contextual alternates and is visible

Hi!! I'm involved in the development of a typeface and it's getting a problem with the pilcrow symbol, the typeface works entirely with the calt feature an this modifies the pilcrow so that every end of line gets a wrong character (the space perhaps):

 It should look like this:

We've tried with open type replacement for the character displayed but the feature doesn't recognize it as any space or as a pilcrow.

Thanks for your help.