Post Grid Search by PickPlugins vs Post Grid Combo

Hi.  I am working on a client's site and notice both "Post Grid Search by PickPlugins" and "Post Grid Combo" installed, but thr Combo plugin can't be activated due to conflicting class names (Fatal error: Cannot redeclare post_grid_search_keyword_field() (previously declared )....  Does the Combo plugin replace the Search plugin?

I am not sure if either of these are actually being used anywhere, but wanted to check before pursuing more info here.

Thanks for letting me know if both of these plugins can work together, or if the COMBO plugin replaces the SEARCH plugin.