What do you mean?
Normaly, you would have to translate all, what you've changed.
But i can't see, where's your text (i see CIV4GameText_Civilopedia_Sengoku.xml, CIV4GameText_DiplomacyText_Sengoku.xml and CIV4GameText_Events_BTS.xml, but there's not enought text), and normaly BtS would just search in the other folders, to get the right tags (like for the menu), but i don't know, why not here.
Tomorrow i'll try out, what happens, when i put the other text.xmls in the folder (no time at the moment).
Edit: I see it:
Your civilopedia-entries are like this:
PHP:
<Text>
<English>bla</English>
</Text>
Normal entries are:
PHP:
<Text>
<English>bla</English>
<French>bla</French>
<German>bla</German>
<Italian>bla</Italian>
<Spanish>bla</Spanish>
</Text>
If you want to play in an other language than english, and somewhere, really somewhere are the other language-tags missing, your text will randoml< vanish.
I've added only one component to my mod, with 3 text-keys which had no other language-tags, and half of the text in my mod disappeared.
To get your mod work in other languages, add the missing tags and just copy the english text in it.
Now it'll run in with only the new things untranslated, which, i think, is much easer than the complete mod in english.