---
pdfexport: true
alias: tutorials-migration-guide
timetoread: true
description: "This guide details migration changes for Critical Manufacturing MES, focusing on Flow, Rework Path, and Master Data updates"
---

# Migration Guide

Version 11.0 introduced significant changes to Critical Manufacturing MES system, impacting several aspects of how you create and manage **Flows**, **Rework Paths**, and **Master Data Packages**. This guide highlights the key differences and provides step-by-step instructions to help you navigate these updates.

## Creating a Flow

### General Data

Before version 11.0, in the General Data wizard, when the Flow Type was Sequential or Alternate, you had to specify the type of child nodes for the **Flow**, whether they were **Steps** or **Flows**. After version 11.0, you only need to specify the Flow Type from the following options:

* Sequential
* Alternate (choose Single or Multiple Selection)
* Non-Sequential Block
* Line

=== "Before version 11.0"

    ![Screenshot showing a blank data entry form with fields for general information.](../../../../userguide/business-data/flow/images/create_flow_step_one.png)

=== "After version 11.0"

    ![Screenshot showing a sequential flow diagram in a creation wizard.](../../../../userguide/business-data/flow/images/create_flow_wizard_sequential_flow.png)

This means you don't have to indicate whether your **Flow** comprises only **Steps** or **Flows**; it can include both at the same level. You can add as many **Flow Items** as you like by selecting the :material-pencil: button.

![Screenshot showing a general data flow diagram with multiple steps and flows at the same level.](../../../../userguide/business-data/flow/images/create_flow_step_two.png)

### Rework Paths

Before version 11.0, when configuring Rework Flows, the Return Path had to be a **Step** within that **Flow**. So, in the **Before version 11.0** example shown below, if the Rework Path was configured in Step 4, the Return point would have to be Step 3. After version 11.0, Rework Paths can be defined at the **Parent Flow** level, allowing Return Paths to any **Step** within its structure. These Return Paths are anchored to the **TopMost Flow** where they are defined, rather than to a specific **Flow Item**. For instance, in the **After version 11.0** diagram, the Return Path can be any **Step** (e.g., Step 1, Step 2, Step 3, or Step 4) within the **TopMost Flow** (Flow 1).

=== "Before version 11.0"

    ![Rework Flow Paths Before](../../../images/rework_paths_before.png){width=500}

=== "After version 11.0"

    ![Rework Flow Paths](../../../images/rework_paths.png){width=500}

## Master Data Template

Before version 11.0, the **Flow** sheet in the Master Data required specifying the Child Type (column D), indicating whether it was a **Step** or a **Flow**. After version 11.0, this requirement moved to the **Flow Items** sheet (column B).

=== "Before version 11.0"

    ![Screenshot showing a Master Data Template with options for Single or Multiple Selection in column J.](../../../images/flow_master_data_flow_before_11.png)

=== "After version 11.0"

    ![Screenshot showing a Master Data Template with Flow Items, illustrating the step required for compatibility with version 11.0.](../../../images/flow_master_data_flow_items.png)

After version 11.0, it is also possible to choose whether your Alternate **Flow** uses Single or Multiple Selection (column J). Single Selection considers only the first **Flow Item** whose condition resolves to true when attempting to move the **Material** to the next **Step**, while Multiple Selection allows choosing from any **Flow Items** with true conditions. Before version 11.0, Multiple Selection was the default setting, and this choice wasn't available.

=== "Before version 11.0"

    ![Screenshot showing a Master Data Template with options for Single or Multiple Selection in column J.](../../../images/flow_master_data_flow_before_11.png)

=== "After version 11.0"

    ![Screenshot showing a Master Data Template with options for Single or Multiple Selection in column J.](../../../images/flow_master_data_flow.png)

In version 11.0, the **Flow** Structure sheet was renamed to **Flow Items**, requiring you to change the name of this sheet in your Master Data template to be compatible with versions above 11.0. In addition, it's now possible to set Rework Path conditions, such as Expressions (column L), Rules (column M), Sampling Steps (column N), and Sampling Plans (column O). You can also define entry and exit Rules for **Steps** (columns J and K).

=== "Before version 11.0"

    ![Screenshot showing a Master Data Template with outdated Flow Structure sheet label.](../../../images/flow_master_data_flow_structures_before_11.png)

=== "After version 11.0"

    ![Screenshot showing a Master Data Template with Flow Items, illustrating the step required for compatibility with version 11.0.](../../../images/flow_master_data_flow_items.png)

Beyond the basic information, you can specify additional settings in version 11.0, such as whether the Rework Path applies to Queued and Processed States (columns O and P), and set Rules for On Rework (column Q).

=== "Before version 11.0"

    ![Screenshot showing additional settings for Master Data Template in version 11.0, including Rework Path application options.](../../../images/flow_master_data_rework_paths_1_before_11.png)

    ![Screenshot showing a configuration option for Master Data Template, specifically related to Rework Path settings in version 11.0.](../../../images/flow_master_data_rework_paths_2_before_11.png)

=== "After version 11.0"

    ![Screenshot showing a Master Data Template with options for specifying additional settings in version 11.0, including Rework Path application rules.](../../../images/flow_master_data_rework_paths_1.png)

    ![Screenshot showing a Master Data Template with options for additional settings in version 11.0, including Rework Path application rules.](../../../images/flow_master_data_rework_paths_2.png)