Auto-propagation question

Hello all,

I have five modules (.xlf source files) that I have imported into a SDL Trados Studio project. Each of these modules contains a number of duplicated strings, but only one of the strings has been edited/updated. 

How do I auto-propagate the newly edited strings to over-write the old translations. How do I ensure that the newly edited strings are treated as the new source of truth strings?

The commonality would be the English source language, which has not changed, so it could be used to match the other strings.

Thank you. :)