What changes / Language replacements occur during an upgrade to Vshare 2.7

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BUMP
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Why won't someone answer?
I have no problem paying for the upgrade, but I need to know what kind of work I'll have to deal with afterwards? Certainly the developers should know how to answer this question, one that I'm certain anyone with a foreign vShare application would be interested in?
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Hi everyone. Before I upgrade to version 2.7 can someone please tell me which items might get mucked up in the existing version 2.6 by the upgrade? My concern is primarily about the translated language files ... will these be overwritten, and if so, will I be able to save and then reuse my existing language file from version 2.6 instead?

Is it possible to obtain a list of file names - now that Zend encoding has been done away with - in order to be able to translate important areas such as currency symbols, hours ago, minutes ago, days ago, months ago, years, and so on? Some of that stuff couldn't be translated in version 2.6 and that does look a little unprofessionell when you're trying to run a language specific site.

Also, our start page has a flash module in place which was purchased and installed separately. Does anyone know if the upgrade to version 2.7 might mess something on the start page up? Our server is up to par, but the flash module shows all of our days top clips in a big 4 X 4 flash block. Would hate to lose that somehow ...

Last but not least, the version 2.7 demo also shows a flash module at the top now. Is this included with the standard version 2.7 upgrade or is that something that needs to be purchased separately? I'd really appreciate some productive answers. Thanks a bunch in advance.