> For the complete documentation index, see [llms.txt](https://bpmflow.gitbook.io/project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bpmflow.gitbook.io/project/functional-and-technical-information/partial-execution-framework/functional-information.md).

# Functional Information

This chapter depict the steps to follow to migrate old processes to **BPM Flow**. These steps must be followed for each process definition. 

The steps described bellow are all present in different **Test Cases** of the **SUnit** in **BpmRuntime\_Tests** packages and these can be used as a guide for the migration.

## 1. Generate XML sources for all forms in all process

This must includes the XML source of the Form Definition and the Form Instance.

## 2. Create a class under BpmProcessExecutionTest hierarchy

This new class will hold all necessary methods to simulate the execution of one BPM Process Definition with N BPM Process Instances.

## 3. Create methods to instantiate forms of step 1

With XML sources of step 1 instantiate Orbeon Form Definition and Orbeon Form Instances

## 4. Create a Test method to simulate the execution of a BPM Process

With methods to get Orbeon Forms Definitions and Orbeon Form Instances already created then the last step is to create a Test Method for each BPM Process Instance.