# Qiime2 2018.4 and 2018.11 greengene

**URL:** https://forum.qiime2.org/t/qiime2-2018-4-and-2018-11-greengene/7250
**Category:** User Support
**Tags:** greengenes
**Created:** [December 3, 2018, 3:36am UTC](https://forum.qiime2.org/t/qiime2-2018-4-and-2018-11-greengene/7250 "2018-12-03T03:36:20Z")
**Posts on this page:** 1
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### Author: ![thermokarst](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/t/8e7dd6/32.png) [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [December 3, 2018, 4:57pm UTC](https://forum.qiime2.org/t/qiime2-2018-4-and-2018-11-greengene/7250/2 "2018-12-03T16:57:52Z")

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Hi there @Clara! Greenegenes hasn't been updated in many years --- I suspect that you might have some subtle differences in the commands run between the two versions. How about you [compare provenance](https://forum.qiime2.org/t/how-to-read-provenance-in-an-artifact-file/7257/2) for the two tables to see what has changed? If you need help can you run `feature-table summarize` on the two tables and share here? Thanks!

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