Executing Microsoft.Web/sites Deployment Clears All Deployment Center Deployments, Effectively Resetting the AppService

[Mike-E-angelo]

Bicep version

Bicep CLI version 0.25.3 (862708594a)

Describe the bug
I initially opened a discussion here: Azure/bicep#13172

But did not get much assistance, so opening a bug here to track. When redeploying a Bicep template deployment involving a Microsoft.Web/sites section, it appears to clear all Deployment Center deployments, effectively resetting the site to default content.

Expected: when redeploying via Bicep template, previous Deployment Center content remains intact.

To Reproduce

1. Deploy template with Microsoft.Web/sites configuration
2. Deploy AppService via Azure DevOps content
3. Repeat step 1
4. Observe AppService deployed in step 2 has been erased and reset to standard AppService content

Additional context
Thank you for all your effort out there. Outside of this one issue everything else works exactly as expected/desired. 🙏

[Mike-E-angelo]

The interesting thing that I just encountered here is that this does not seem to apply to slots. 🤔 I did a deployment just now that deployed to both sites and slots and only the sites was cleared.

[Mike-E-angelo]

I am surprised this hasn't gotten more activity. Is it truly expected behavior that each deployment destroys a website's content? 🤔 This seems a bit disruptive and counter-intuitive, especially if the deployment is part of CD/CI.

[Mike-E-angelo]

Azure/bicep#13172 (comment)