Apple Health Kit

We have an app that reads data from the Apple Health Kit that is about 5 years old and we stopped receiving data from the app. While investigate why it quit working we are seeing some messages in the console log when we plug a phone into a mac that we are trying to get clarification on. We are seeing from the log:

healthd 'STARTING: com.apple.healthkit.background-delivery.<our app id>:<thread?>'

followed by a:

dasd 'COMPLETED com.apple.healthkit.background-delivery.<our app id>:<thread?> at priority 30 <private>

then a

dasd 'NO LONGER RUNNING com.apple.healthkit.background-delivery.<our app id>:<thread?> ... Tasks running in the group [com.apple.dash.default] are 1!

I was looking for some clarification on what these messages mean. Do they mean that our app was started and that the process completed successfully or, is it a warning saying that something abnormal happened.

Also, I'm coming up short on documentation when I google for these messages. Is there a repository out there to help me make sense of what I'm seeing?

Thanks for any insight!