Welcome in the forum, Greg!
We could say a bit more (or even a byte more ;-) when you post your complete project with all of your settings. To do so, use
Creator->File->Create Workspace Bundle (minimal)
and attach the resulting file.
There is the IO-pin which is not in high-z mode when sleeping and there is the SWD (Serial Wire Debug) enabled (in System tab). Both will affect power consumption.
Can you please let me know if you are still observing high current consumption after finish modification mentioned in the previous interaction?