Contextual information from the Bitgreen team, below:

For a detailed description please refer to this: [https://hackmd.io/@t9B1coeOQ1GlARb2EZRx3g/Hy0mnACdo](https://hackmd.io/@t9B1coeOQ1GlARb2EZRx3g/Hy0mnACdo)

The bitgreen parachain was upgraded from a shell runtime to our latest runtime code at block 191202.

The upgrade executed without issues and the parachain continued to produce blocks. The upgraded parachain runtime introduced a couple of new pallets, the pallet-parachain-staking among them. This new pallet was responsible to assign new validators to session pallet and by extension the aura pallet. After the runtime upgrade, when a new session was triggered, it set the new authorities to an empty set since the pallet-parachain-staking was not set with any initial values.

We have explored all other solutions and after discussion and advice from Parity devs have created this proposal. Our humble request to the TC is to fastrack this proposal, this is purely a technical rollback since our chain has no user transactions or funds yet. We would like to distribute token rewards as soon as possible. Similar parachain resetshave been fastracked by the TC in the past and we request that our proposal be fastracked aswell.

Proposal hash: `0xfc0c33d0c0ae08d940fddadb11e239710da69b8660eaae7f77ea102a331e4ebe`

Preimage is submitted. 



Schedule the currently externally-proposed majority-carries referendum to be tabled
immediately. If there is no externally-proposed referendum currently, or if there is one
but it is not a majority-carries referendum then it fails.

The dispatch of this call must be `FastTrackOrigin`.

- `proposal_hash`: The hash of the current external proposal.
- `voting_period`: The period that is allowed for voting on this proposal.
	Must be always greater than zero.
	For `FastTrackOrigin` must be equal or greater than `FastTrackVotingPeriod`.
- `delay`: The number of block after voting has ended in approval and this should be
  enacted. This doesn't have a minimum amount.

Emits `Started`.

Weight: `O(1)`

Send a batch of dispatch calls.

May be called from any origin.

- `calls`: The calls to be dispatched from the same origin. The number of call must not
  exceed the constant: `batched_calls_limit` (available in constant metadata).

If origin is root then call are dispatch without checking origin filter. (This includes
bypassing `frame_system::Config::BaseCallFilter`).

# <weight>
- Complexity: O(C) where C is the number of calls to be batched.
# </weight>

This will return `Ok` in all circumstances. To determine the success of the batch, an
event is deposited. If a call failed and the batch was interrupted, then the
`BatchInterrupted` event is deposited, along with the number of successful calls made
and the error of the failed call. If all were successful, then the `BatchCompleted`
event is deposited.

- The Bitgreen parachain was upgraded to a new version.
- The upgrade went smoothly and the parachain continued to work.
- A new feature called pallet-parachain-staking was added.
- There was a problem with the new feature that caused some issues.
- The Bitgreen team is asking the Tech Committee to help fix the problem quickly.

#75 Unbrick Bitgreen Parachain