Auto Assignment Not working after SR being updated

Summary:

For SR update scenario the Queue and Assigned To fields are not being updated automatically.

Content (please ensure you mask any confidential information):

Hello Experts,

We configured SR Assignment Rules
1. Category = Cat001 —>AssignTo: Agent001

2. Category = Cat002, CustomField1_c = Y —>AssignTo: Agent001

3. Category = Cat003, CustomField1_c = Y, CustomField2_c = Y —>AssignTo: Agent001

Queue: SRAgentTeam1, Agent001 (AUTO)

1. For SR Creation, with Category = Cat001, Queue and Agent is automatically getting assigned. (PASS)

2. For SR Creation, with Category = Cat002

On SR Details page, CustomField1_c is updated to "Y"

In this case, Queue and Agent is not getting assigned automatically. (FAIL)

When Action is clicked for this SR: Actions> Assign to Queue, Queue is getting assigned but the Agent is not assigned (FAIL)