Today user’s have to force update on onedrive files.
This should be automatic.
ref https://help.miro.com/hc/en-us/articles/360017731273-OneDrive#h_01FJH99TSNVD56AWYFAP0ZRTSH
“Updating files
In order to update a file on a Miro board, please click the respective button on the context menu.”
Would like the same integration as to Gdrive.