Business Process BPL context: objects deleted after CALL

I'm creating a Business Process that:

1. Transforms one object into another using DTL
2. Sends this object to an operation
3. Transform the object obtained in first point into another one using DTL
4. Sends the second object to an operation

The Business Process is created with BPL, and objects are stored in BP context. When I execute this Process, in the 3rd point the object obtained in first transformation doesn't exist. It's empty.

I have tried to make transformation before making CALL's, I mean:

1. Transforms one object into another using DTL
2. Transform the object obtained in first point into another one using DTL
3. Sends first object to an operation
4. Sends the second object to an operation

And after sending the first object, the second doesn't exist.

I thought it was a bug from new version 2025.1, but I have tested it on 2024.3 and it happens the same.

I have created a Business Process with code and it works perfectly fine, so I think the problem is with the context.

Is this a bug? Or is an expected functionallity?