Our Hospital is on its last steps to mapping its database to OMOP CDM v6.0. Once we finish, we will get our database certified. However, we saw that there is a plan to include an oncology extension in the next version v6.1 (https://ohdsi.github.io/CommonDataModel/oncology.html, https://github.com/OHDSI/OncologyWG) that currently supports v5.31 . Is it possible for us to include the extension before we get certified? Or should we get certified in v6.0 and wait until v6.1 is released to move to that version adding new ETLs and then get certified again?