Best way to parse colums and rows w/ multiple values separated by comma?

Not entirely sure I follow but perhaps try altering:

.Offset(, 1).Resize(UBound(vData) + 1, 2).Value = .Offset(, 1).Resize(, 2).Value

to

.Offset(, 1).Resize(UBound(vData) + 1, 11).Value = .Offset(, 1).Resize(, 11).Value

so instead of simply copying down B:C you're now copying down B:L