# 6.14.9

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**Note:** If you have *Custom Connectors* in your environment, upgrading to 6.14.9 and above is not backward compatible with previous flow versions due to the .NET Framework update and will require a re-build/[re-wrap](https://help.novacuraflow.com/connectors/areas/utility/custom-.net) of your custom connectors.
{% endhint %}

**Server:**

* The .NET Framework is updated to version 4.8. Please note that the .NET 4.8 framework is required for the Flow Server machine.
* When deleting a scheduled workflow, the schedule was not disabled prior to the deletion, causing the disk to fill with log files. This has been fixed. 

**Connector:**

* M3 Rest Connector: Parameters with empty values will no longer be sent to the M3 API.
* SAP BAPI Connector: Sometimes Flow studio crashes while configuring machine steps. This has been fixed.

**Flow studio:**

* Azure AD synchronization did not inactivate users. This has been fixed.