From the Azure Portal, I exported an ARM template of a Resource Group (via the "Automation script" option). Unfortunately, when I loaded the exported template in Visual Studio, I was confronted with hundreds of warnings. Some of them are:
Why am I seeing so many warnings? I would expect the Portal to export fully valid JSON, per the schema.
I'm using VS2017 15.9.4 and Microsoft Azure Tools 2.9.10730.2.