Error while saving a sequence with comment tags "<!--Optional:-->" in the PayloadFactory mediator.

[TomasWso2]

Hi Team,

Error " com.ctc.wstc.axc.WstxParsingException. Undeclared namespace prefix "a" " when copying a payloadFactory mediator from an working API resource to a separate sequence.

We identified this error occurs due to the comment tags "" in the PayloadFactory mediator.
Once we removed the comment tags, the issue was solved.
This error does not occur inside an API resource, but it does occur inside a sequence.

Observed this issue in Integration Studio 8.2.0.202305080436, but it might happen in other versions aswell.

Steps to reproduce:

• Create a new sequence with a payloadFactory and add comment tags "" inside the soap body.
  (can use attached sampleSequence.xml)
  sampleSequence.txt
• Try to save it.

Thanks.