Hi. Replacing <tvar|1>...</>
with <tvar name=1>...</tvar>
does not require invalidating the existing translations. Please use "Do not invalidate translations" checkboxes (in Special:PageTranslation) properly.
Topic on User talk:Eihel
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Ah yes, you are right, @Shirayuki, I forgot that. Fortunately, there is not a lot of translation. I will try to see the other languages and correct if possible. Thank you for your message.
Thanks for the Japanese, @Shirayuki I made the changes because the translations are not numerous.