Sharepoint List columns with default "(blank)" show as "No"

[dunecat]

I have some columns in my Sharepoint list that are checkbox boolean types, with the default value set to blank.

However, whenever I add an "Update item" action in my flow, they all default to "No". This is incredibly frustrating as I have to go through one by one and make them empty to prevent any data loss.

Is there some way to prevent this from happening, or is this just another Flow quirk?

[ScottShearer · Accepted solution]

@dunecat :

Assuming that you have a Get Item action before the Update Item action, try setting the value of the column when updating the item to the value retrieved from Get Item.  In other words, reference the column value from the Get Item Dynamic properties.

If this addresses your issue, please mark your post as Solved.

If you like my response, please give it a Thumbs Up.

Scott

[dunecat]

Thanks for the response.

I don't currently have any "Get item" actions in this flow. Assuming I add a Get Item action at the top of the flow, could I then reference the data from that in just the final Update Item action, and it would pull the data from the "Get item" point in time? 

[ScottShearer]

@dunecat :

Your description is accurate.  You'll find that you need to supply values for any required field even if the value hasn't changed.  The way to accomplish that is as I described above,

Scott

[dunecat]

Perfect, I'll try that out. Thanks for the help!