No, there is no online caching, the github line is just referencing the full source code path.
Go into the Traefik container and check your config files, like:
docker exec -it <container-id> sh
find / -type f -name "*.yml" -print -exec echo -e "\n\n\n\n\n=#=#=#=#= {} =#=#=#=#=" \; -exec cat {} \;
Holy cow - Eating my own words now as that command helped me tremendously.
That command showed me that all current YML files were loading into the container, which I had copies of.
I had copied my configs as "v2" versions but forgot to change the extension to .old.
I thought simply being a different name would cause them to not load or be used.
I changed their extension to .old so my actual configs would load and everything appears in order once again.
Sonarr4k.mydomain.net is now loading correctly.
tdarr.mydomain.net is now also working after finding a line configuration issue.
THANK YOU SO MUCH!!! SOLVED!! 
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