The B Katha owners are very lucky that the katha is being regularised or converted to A katha and are thinking, just by paying the charges, it could be done.

Wait and follow the procedures.

The Government is coming out with the new notification and guidelines soon.

Every B katha cannot be regularised or converted.  Only those eligible are regularised.  Even, if the katha is regularised, based on misrepresentation of facts or lies or false declarations, it will STANDS CANCELLED, once it is scrutinised.