Upgrade structured FM document from FM7.2 to FM10 with diacritics from EDD

Hello.

We have a set of documents in FM7 version. Here we use elements that have prefix defined in EDD. So we achieve to automatically create text using these elements.

But this prefix contains Slovak diacritics. Now the problem is when we upgrade this document to FM10.

When we open it, the text looks OK. But when we insert this element to upgraded FM10 document, the diacritics is broken. (or we change this element to the same element)

It looks like the internal EDD is still holding non-Unicode texts.

When we open the FM7 EDD and upgrade it to FM10 document, then prefixes in EDD are OK and when this EDD is again imported to document, the texts from EDD works ok.

Is there any other way to fix this without reimporting new EDD to all documents?