Problems converting fp5 to fp7 (local letters in Value lists and Scripts)

Hi, everybody

Im new here, but made a search in forum(s) and havent found any good advice.

Converting Windows fp5 to fp7 using FMP 8.5, woud like to move to 12 or 13 version.

Quiet complex database with lot of scripts, value lists, butons etc.

Database content made on v5 using non-Unicode fonts and special characters (like - Lācis gāja mežā dzērvenes ēst

Pity thing is - Value lists and even Scripts and Field names are sometimes made with such symbols (i told them dont use it on scripts and fields... but this was loooong time ago and even i dont remember this for sure

So, Database itself converting and even looks something similar. All fonts are ok, special symbols as well

Simple scripts - like Find etc - works

BUT special symbols used in Scripts, database fields and Value lists was not converted properly -> database dont work

Any thoughts on:

1. Is it possible to solve it in automatic way

2. Semiautomatic way

3. How

Thanks for any feedback regarding this !