Hi @help ,
According to my research and testing ,you can use PowerShell script to download the modern page to your local machine, and then upload it to classic SharePoint site. Please follow these steps:
1.Download the modern page;
Connect-PnPOnline -Url https://xxxx.sharepoint.com/sites/zellatest
Get-PnPFile -Url '/sites/zellatest/SitePages/xxxx.aspx' -Path 'C:\' -Filename 'xxxx.aspx' -AsFile
2.Upload to classic SharePoint site:
Connect-PnPOnline -Url https://xxxx.sharepoint.com/sites/zellaclassic
Add-PnPFile -Path 'C:\xxxx.aspx' -Folder "SitePages"
Update
As a workaround, you can create a Power Automate, please follow these steps:
1.Click Automate ->> Power Automate ->> See your flow
2.Click Create ->> Automated cloud flow ->> Input "Name" ->> "When an item is created" ->> Create
3. Input contents and click "save"
4.Create an item in the library (In my test, I create an item in the "aaaa" library). Then, click Test ->>Manually .
5.Wait a minute and go to the classic site to check if the copy was successful.
6.You can delete the new item you just created.
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