Hi @jeon3029
Do you mean these two flags? I found them in Chrome flags, they're not available in Edge.
For HTTPS-First Mode V2 For Engaged Sites flag, it enables Site-Engagement based HTTPS-First Mode, which shows HTTPS-First Mode interstitial on sites whose HTTPS URLs have high Site Engagement scores. Edge doesn't support the interstitial, so Edge doesn't have this flag.
For HTTPS Upgrades flag, Edge has similar policy which you can use. You can use this policy AutomaticHttpsDefault to configure automatic switch from HTTP to HTTPS. In case you want to disable the automatic switch only for specific websites, you can use this policy InsecureContentAllowedForUrls and configure those sites there.
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Regards,
Yu Zhou