Item List mapping not visible in "Start a subworkflow" action between workflows in the same Application

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Hi everyone,

I'm facing an issue while trying to map an Item List using the native "Start a subworkflow" action.

My Scenario:

I have a single Application containing two workflows: "Pedido de Orçamento" (Purchase Quotation) and "Pedido de Compra" (Purchase Order).

Both workflows share an identical Item List structural layout (same column names like Artigo, Quantidade, etc.).

I want to move the process from "Pedido de Orçamento" back to the Author so they can choose a path named "Realizar Pedido de Compra". This path should trigger the action to create a new instance in the "Pedido de Compra" workflow and copy the Item List rows.

The Problem:
When I go to the "Data" tab inside the Start a subworkflow configuration screen to map the fields, the target Item List from the Purchase Order workflow does not appear at all in the left panel. Only a generic single-line field (Detalhes do Pedido) is visible.

What I have already verified:

Both workflows are definitely inside the same Application.

In the target workflow ("Pedido de Compra"), the Item List visibility matrix is completely opened and set to "Visible" right at the initial/registration step.

I have tried changing the Form Type in the action configuration to match the target form, and I also tried leaving the Path configuration completely blank to target the registration step matrix, but the list still won't show up for mapping.

I tried switching to Advanced Edit Mode, but the source form fields tree on the right doesn't load the structural parameters either.

Has anyone encountered this specific behavior where an Item List is ignored by the subworkflow wizard within the same app? Are there any hidden caching issues or specific form configuration dependencies I might be missing?

Any help or workarounds (besides moving to raw SQL actions) would be highly appreciated!

Thanks in advance,
Leonardo