Issue with Sharepoint Migration API CreateSPAsyncReadJob manifest.xml and CreateMigrationJob.

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

SharePoint CSOM

Developer environment

Windows

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

PnP.Core 1.14.0
PnP.Framework 1.17.0
WindowsAzure.Storage 9.3.3

Describe the bug / error

When using SharePoint migration API with CreateSPAsyncReadJob and CreateMigrationJob, we have an issue where CreateMigrationJob can’t parse the manifest that the CreateSPAsyncReadJob creates. It throws an error
[System.Xml.Schema.XmlSchemaValidationException] [The 'Description' attribute is not declared.]

1. Using CreateSPAsyncReadJob to create the migration package which works fine:

        ClientResult<AsyncReadJobInfo> output = sourceContext.Site.CreateSPAsyncReadJob(
           listUrl,
           new AsyncReadOptions
           {
               IncludeDirectDescendantsOnly = false,
               IncludeSecurity = false,
               IncludeExtendedMetadata = true,
           },
           null,
           manifestUrlReadWrite,
           reportQueueUrlReadAddUpdateProcess);
       sourceContext.ExecuteQuery();
   

2. Move the packages to root level of azure container.

3. Start migration job using CreateMigrationJob

       var migrationJobId = targetContext.Site.CreateMigrationJob(
         targetContext.Web.Id,
         sourceContainerUrlReadList,
         manifestUrlReadListWrite,
         reportQueueUrlReadAddUpdateProcess);
   
       targetContext.ExecuteQuery();
   

After the third step the migration job is started, after it runs for a while (processing security and other xml’s it fails on parsing the manifest.xml

Steps to reproduce

1. Create the manifest file using the CreateSPAsyncReadJob method
2. Copy and create snapshot for all xml files at the root of the container
3. Create the Import job using CreateMigrationJob method

Expected behavior

When import is started, the manifest file should be parsed without errors by the migration job, and migration of manifest content should be started.