Are translation results cached anywhere?

This is just a question.

When I close and reopen the project, ResX manager seems to discard all the auto translation responses for keys where I haven't already selected and applied a result. Is there any way to cache these and restore them? For a project with thousands of keys and multiple languages and translation API results to look through for each one, the developer may not be able to look through and select the best one for every key in one go. And with some of these translation services charging per request, I'd hate to have to repeat requests because I had to close and reopen the project for some reason.

Thanks!