Here is the official Frontier post found on the ED Launcher page under SUPPORT NOTICE > 2.2 MISSION REMOVAL.
I figure when the flood of posts come in per mission losses just send them here and save a lot of typing for everyone.
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Question: What will happen to my missions when the game is updated?
Updated: Wednesday 5th April 2017
Any current missions will be wiped from all Commanders on the week of April 10th - April 16th (UTC+0) when the servers are upgraded to Update 2.3 - The Commanders.
This will affect any current missions that have not been handed in or abandoned, regardless of whether these are active, completed, or failed. In addition to this, long range passenger missions have been given a temporarily shortened time limit and should be accepted with caution.
Any missions removed will not suffer from the regular penalties such as reputation loss, fines, or bounties. However, in order to claim your rewards, you must both complete and hand-in these missions at least 30 minutes before downtime begins. Downtime will be announced via the in-game system notices and on the forums at least one hour in advance. Exploration data obtained whilst completing any mission will be unaffected by this update.
Note: Frontier Support will not be able to assist with any missions that are lost as a result of the update to Update 2.3 - The Commanders.
I figure when the flood of posts come in per mission losses just send them here and save a lot of typing for everyone.
_______________________________________________________________
Question: What will happen to my missions when the game is updated?
Updated: Wednesday 5th April 2017
Any current missions will be wiped from all Commanders on the week of April 10th - April 16th (UTC+0) when the servers are upgraded to Update 2.3 - The Commanders.
This will affect any current missions that have not been handed in or abandoned, regardless of whether these are active, completed, or failed. In addition to this, long range passenger missions have been given a temporarily shortened time limit and should be accepted with caution.
Any missions removed will not suffer from the regular penalties such as reputation loss, fines, or bounties. However, in order to claim your rewards, you must both complete and hand-in these missions at least 30 minutes before downtime begins. Downtime will be announced via the in-game system notices and on the forums at least one hour in advance. Exploration data obtained whilst completing any mission will be unaffected by this update.
Note: Frontier Support will not be able to assist with any missions that are lost as a result of the update to Update 2.3 - The Commanders.