Thunderbird Message Filter Import/Export

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wót Burkster dnja Awg. 10, 2010 · trajny wótkaz

Tried, was hoping I could copy filter from one mailbox account to others, but it only exports to file so I didn't want to waste any time.
Noticed the (spamassasin) filter entry disappeared on all of my accounts however upon removing of this installation, it didn't come back right away.

After a few program restarts it showed up again.