Adding blanc column in power query for future notes

Hello everyone, 

I have a power query report, for which I need to add few empty columns so I can manually add notes later on excell. 

The data source is an excell file .

I tried two methods and both did not work.

First method

I added custom columns in Power Query , and added my comments on these columns in excell, However when  refresh the query , the commnets on the "Notes columns" disapear, 

It looks Like the empty columns from Power Query override the data that I enetered.

Second method

I removed the notes columns from power query, (saved and closed), and added "my notes columns" the excell table .

added my notes.

I noticed when I refresh the query that my comments on the "notes columns" do not match the data that I enetered the comments for .

for example:  I added a comment on cell M22 for the employee John, after I refresh the same comments moves to aother employees row .

I wonder , If there is a different way to add these columns in power query and still have the ability to add and keep my comments .