How to merge rows based on some ID field?
Original Table New Table ID | Field1 | Field2 ID | Field1 | Field2 -----|------- |------
I think a simpler solution would be to use:
1° The feature "Edit Cells / Blank Down" on your ID column, in order to get something like this:
2° Then "Edit Cells / Join Multivalued cells" on the last column only (Field2), which will produce this: