Converting a manual test to web (fast-forward) leaves the step empty on execution.

Steps to reproduce:

- Create a manual test with test steps

- Fast forward to web test

- Uncheck test IsManual property so that the test is converted to automated one

- Execute the test

Expected: Playback displays the manual step dialog (pass/fail) with the actual manual step

Actual: It displays empty dialog when it reaches the manual step.