I thought that where it was annotated as 'Private Transcription' on Lancashire OPC that it related to the source of their transcript not what it says in the register
Baptism: 1 Aug 1742 St Bartholomew, Westhoughton, Lancashire, England
Adam Gregroy - Son of James Gregroy
Source: LDS Film 2113219
Baptism 1 Aug 1742 St Mary the Virgin, Deane, Lancashire, England
Adam Gregory - son of James Gregory
Abode: Westhoughton
Register: Baptisms 1716 - 1751, Page 341, Entry 31
Source: Private Transcription