
Hi @Vash Panday
You can use this policy InternetExplorerIntegrationLocalSiteListExpirationDays to change the expiration days.
If you haven't import Edge group policy template, you can first refer to this doc Download and install the Microsoft Edge administrative template to import the template.
Then you can enable the policy and enter the number of days for which the sites are retained on the user's local site list in Microsoft Edge. The value can be from 0 to 90 days.
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Regards,
Yu Zhou