Clear the AOD cache, including the SysExtension cache, from the UI

There is really no place in the UI of "Microsoft Dynamics 365 for Finance and Operations, Enterprise Edition" where you can find a button to clear the AOD cache.

If you for example introduce a new class to an extension based on SysExtension this is a problem, because it wont be picked up until the cache has been cleared.

The earlier workaround doesn't seem to work in the "July 2017" update.

But the class to clear the cache is runable, so you can build a URL to call it:

https://[your AOS].cloudax.dynamics.com/?mi=SysClassRunner&cls=SysFlushAOD

Or just make the URL for the menu item:
https://[your AOS].cloudax.dynamics.com/?mi=action:SysFlushAOD

Big thank you to Volker Deuss for giving me this idea.

New "Retail" model in "July 2017" creating backwards compatibility issues

The "July 2017" release has a new model called "Retail" and elements have been moved from other models to this model.

Even if you have made your own solutions exclusively with extensions, this might break your build because you might now need to add a reference to the "Retail" model.

But when you add that, you can't build your solution on the "1611" release anymore because build will complain about not knowing the "Retail" model listed in the Descriptor file.

So, even if your code works perfectly on both "1611" and "July 2017", you could have a need to branch out in VSTS to have two different Descriptor files.