How to Convert PO to XLIFF (and Back) Without Losing Metadata

Convert gettext PO files to XLIFF for CAT tools and TMS platforms — then merge the translated XLIFF back into a valid PO. Step-by-step with Translate Toolkit po2xliff/xliff2po and a polib script, plus the exact field mapping that keeps context, comments, references, fuzzy flags, and plural forms intact.

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