The last mishnah in tractate Keilim, mishnah 30:4, ends as follows:
אָמַר רַבִּי יוֹסֵי, אַשְׁרַיִךְ כֵּלִים, שֶׁנִּכְנַסְתְּ בְּטֻמְאָה, וְיָצָאת בְּטָהֳרָה.
Rabbi Yose said: Happy are you Kelim; for you began with uncleanness, but you ended with cleanness. [from Sefaria]
Logic (and the commentators) refer this to the opening mishnah 1:1 (which discusses avot hatumah) and the words directly preceding Rabbi Yose's statement ("a glass funnel is clean").
This makes it appear that Rabbi Yose saw a compiled form of the tractate. Rabbi Yose died around 160 (according to Wikipedia), and Rabbi Yehudah HaNasi's redaction of the mishnah is dated at 189 (according to Wikipedia).
Thus, did Rabbi Yose see this tractate in the form we have it now? Did Rabbi Yehudah HaNasi (and his team) change (add/subtract/rephrase) certain things, but keep the beginning and end? If the latter, can we determine what was changed?