Unable to import the Robot XML result file if kw is removed specifically from within if block.

Description

Unable to import the Robot XML result file if kw is removed specifically from within if block.

How to reproduce

1. Run the rebot command on the output.xml and it removes the keywords from inside the test cases that are passed.

Actual result/Attachments

Facing an error that file format is not supported. 

Expected result

It should be possible to import the file without any error after removing the kw.