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Splunk Add-on for Microsoft Cloud Services, ingesting zip files not working

Hallo all,
I'm using the "Splunk Add-on for Microsoft Cloud Services" to monitor a blob storage (which is a great feature). It works fine for text files.

However it doesn't handle zip files well.
If I monitor zip files on the file system I have no problems. If I use the same sourcetype to monitor the same zip files stored in a Blob it reads it in as if it were text (,�{7�~4)Tk�tȺ��Ќ����8 >�D3��QԈ0T�� = same 8 lines as you would get if you open the zip file in a text editor.)

Has anyone any suggestions how to solve / workaround this?
Thanks