Issue Summary

• When running manual pipelines with the custom keyword, you can request specific variables for that step. If you select to re-run entire pipeline, it will spawn a new pipeline but will not carry over the variables' values, nor ask you to input them again.
• This doesn't apply to a rerun of the failed steps of a pipeline (it doesn't spawn a new pipeline).

Steps to Reproduce

1. Setup a custom pipeline and ask for any variable;
2. Run the custom pipeline and input the variables as needed;
3. Rerun that build.

Expected Results

• The variables should be carried over to the rerun build, or it should ask for you to input the variables again;

Actual Results

• The build runs but the custom variables are empty.

Workaround

• Run the custom build again directly from the pipelines page.