No, it is not intended functionality in Webflow for interactions to be duplicated twice and lose their "replace elements in animation" settings when a page with interactions is duplicated to create an alternate version. This behavior is likely a bug or unintended consequence of the duplication process.
When you duplicate a page in Webflow, all interactions and their settings should be carried over to the new duplicated page. The "replace elements in animation" settings, which determine how elements are transformed or replaced during an interaction, should also be maintained.
If you're experiencing issues where interactions are being duplicated twice or losing their settings, I recommend reaching out to Webflow support for assistance. They can help troubleshoot the problem and provide a solution.
In the meantime, to prevent any issues with interactions being duplicated multiple times, you can manually recreate the alternate version of the page by copying and pasting the necessary elements and interactions from the original page. This way, you have full control over the duplication process and can ensure that the interactions and their settings are accurately transferred to the new page.
Remember to always check for any updates or bug fixes from Webflow and keep your project up to date to avoid any known issues related to interactions or other functionalities.