Upon composing, I figured out the numbers that are supposed to represent the sheet number are reflecting the record number.
Here is the rule:
var data = FormatNumber("00000", Field("Job #"));
data += FormatNumber("000000", FusionPro.Composition.inputRecordNumber);
data += FormatNumber("0000000", Field("V01_MEMBER_ID"));
data += FormatNumber("00", FusionPro.Composition.impositionSheetNumber);
return MakeDataMatrixBarcode(data, 0, 0, 4, 4);