If your most_recent_subscriber.txt file is not showing resubs then that means it is not configured to show them. These steps below will show you how to include resubs into your files.
1. In Stream Labels select "file settings"(it can also appear as a cog icon on smaller screens)
2. Navigate the drop down to the file you need to include resubs in.
3. Check include resubs and press "save settings" in the top right.