Keep existing choice field value when updating a SharPoint item from FLOW

[dbro]

It's rather annoying when using the update item(s) action in Flow to have to each time set the value of choice columns. If you do not, flow will overwrite those values. I would love it if flow would just leave the existing value (similiar to string columns) if you leave it blank.  Can we add some code to leave the "Existing Value" instead of choosing custom or one of the drop down choices???

[whitelc]

I have a similar problem with Managed Metadata columns. When a Flow runs and updates an item in a SharePoint list, I have to re-update the Managed Metadata column.