DITAVAL "passthough" action does not work for profiling applied to top-level (root) topic element

[chrispy-snps]

Expected Behavior

If I have a profiling attribute applied to a <topic> element, and I specify action="passthrough" for that profiling attribute, I expected to see corresponding data-attname passthrough attributes in the HTML output.

Actual Behavior

The data-attname attribute is missing for top-level (root) <topic> elements, although it is generated as usual for nested <topic> elements:

Possible Solution

Not sure - perhaps update a template somewhere?

Steps to Reproduce

1. Download the following testcase:
   4464.zip
2. Run the following command:
   dita --project project.xml

Environment

• DITA-OT version: 4.2.2
• Operating system and version: Linux
• How did you run DITA-OT? dita command
• Transformation type: HTML5