Based on your screenshot where it says 60/254, those are not 254 changes. That’s in fact the total number of child sites on your Dashboard.
That’s why it always displays that number when you’re deleting the widget entries.
If there are a couple of entries in the widget after the clean-up, it’s possible that the widget didn’t have fresh data before starting the clean-up.
This is indeed going to be a very likely case if you didn’t sync the Dashboard before the clean-up.
It’s also possible that the clean-up failed on a couple of child sites. This would be indicated by the red X icon in the popup modal next to the child site name.
@bojan - boy do I feel stupid now! Indeed, I didn’t realize that clicking the “Delete All Non-MainWP Changes” button would course-through all 254 child sites even if there weren’t any changes on most of them. Thank you for clarifying / educating me on this. Based on that, all is well / functioning normal. My apologies for any wasted time on this.