Hi Ashi,
I would recommend giving this feedback via the Feedback Portal:
Azure Cognitive Services (Feedback)
https://feedback.azure.com/d365community/forum/09041fae-0b25-ec11-b6e6-000d3a4f0858
We are a community mostly made up of community members and would not be able to help with your feedback to updating models with Azure Custom Vision.
If this is helpful please accept answer.