NGC 7023 Iris Nebula

[Slugger]

Iris Nebula is missing catalog number NGC 7023.

.skylist  file

SkyObject=BeginObject
ObjectID=4,-1,-1
CatalogNumber=Iris Nebula
CatalogNumber=vdB 139
CatalogNumber=H IV-74
CatalogNumber=Bernes 39

Importing .skylist file to SkySafari 7 pro does not recognize   vdB 139,  H IV-74 or  Bernes 39. 
SkySafari does find NGC 7023. 

I changed CatalogNumber to NGC 7023. Imported a new list to SkySafari and it worked.

SkyObject=BeginObject
ObjectID=4,-1,-1
CatalogNumber=Iris Nebula
CatalogNumber=NGC 7023
CatalogNumber=H IV-74
CatalogNumber=Bernes 39