Some Gursikhs have a difference in opinion on the length of Mool Mantar.  This is not a serious issue and it’s more important to actually do recitation of Mool Mantar rather than fixating over debates on its length.

Nevertheless, most Gursikhs in Akhand Kirtani Jatha believe that Mool Mantar is until “Gurprasaad” (up until which point, the various qualities of god are described) and then “Jap” is the name of the Bani of Jap Jee Sahib and then “Aadh Such Jugaadh Such…” is a slokh similar to how it is a slokh that comes up (in a slightly different form) in Sukhmani Sahib.