Hi @DNH and welcome to the Community!
The Product ID is the reference by which Klaviyo recognizes a product’s name and information when you are building a flow or product feed. Therefore, it’s not possible to have different products appear in different flows or feeds if the same ID is being referenced.
However, there are other ways to avoid confusion when you’re building a multilingual store. Many people have found it easiest to create to separate Klaviyo accounts for each language site. Since your Klaviyo credentials are designed to support multi-account access, you can use one set of login credentials to access multiple accounts as explained in the About Multi-Account User Privileges Help Center article.
From there, you can use signup forms to collect language preferences and divide your customers by preference. Here’s a great thread moderated by my colleague that outlines some best practices for collecting language preferences and using multiple accounts:
And here are a few more threads regarding similar topics:
I hope this helps and thank you for using the Community!
-Brian