Keeping threading in gmail drafts

I have built a workflow which automatically creates draft emails in Gmail.
However, when the draft it created, the threading (i.e. email history) is lost - so it generates a brand new email essentially.

Does anyone know how to fix this please so the threading is maintained in the draft so when you send the new draft email the recipient will receive all the previous email threads

I have a similar issue : Gmail "Create Draft" node doesn't create a real reply - #2 by Samy_TOURI

Can anyone help us?