[testenv="platinum"]
If you closed all {ml} jobs before the upgrade, you must open them. Use {kib} or
the <<ml-open-job,open jobs API>>. 

Alternatively, if you temporarily halted the tasks associated with your {ml} jobs,
use the <<ml-set-upgrade-mode,set upgrade mode API>> to return them to active
states:

[source,js]
--------------------------------------------------
POST _ml/set_upgrade_mode?enabled=false
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// CONSOLE