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#### Summary <!-- Provide a general summary of your changes -->
Previous PR #1933 sets the line input dataset to the suite dataset. This
should only be done when it's not already set on the line, as it will
otherwise be overwritten.

#### Work Item(s) <!-- Add the issue number here after the #. The issue
needs to be open and approved. Submitting PRs with no linked issues or
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Fixes
[AB#550964](https://dynamicssmb2.visualstudio.com/Dynamics%20SMB/_workitems/edit/550964)