# Trade protocol migration

**URL:** <https://bisq.community/t/trade-protocol-migration/8582>\
**Category:** Support\
**Created:** [October 23, 2019, 10:10am UTC](https://bisq.community/t/trade-protocol-migration/8582 "2019-10-23T10:10:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![goraelec](https://bisq.community/letter_avatar/goraelec/32/5_5575768a8748004e209b776fc1b2916d.png) [@goraelec](https://bisq.community/u/goraelec)\
**Post date:** [October 23, 2019, 10:10am UTC](https://bisq.community/t/trade-protocol-migration/8582/1 "2019-10-23T10:10:06Z")

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Hi. In light of the new trading protocol, I have the following question:

1. Will 1.2 version be able to accept trades with older protocol version?
2. If not, would it be okay to run two different versions of Bisq to participate in all trades until all the traders switch?

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**Author:** ![m52go](https://bisq.community/letter_avatar/m52go/32/5_5575768a8748004e209b776fc1b2916d.png) [@m52go](https://bisq.community/u/m52go)\
**Post date:** [October 24, 2019, 4:45am UTC](https://bisq.community/t/trade-protocol-migration/8582/2 "2019-10-24T04:45:06Z")

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Copied from christoph’s Slack message (will be posted elsewhere shortly):

**Trading with old accounts**  
If you don’t update to 1.2.0 you should be able to continue to trade with other peers that have version \<1.2.0 as long as we don’t set the filter that 1.2.0+ is required for trading. This might happen ~3 days after the release. If arbitration cases occur during that time they can be handled by the arbitrators running 1.1.7. They will see the arbitration or mediation case also in 1.2.0, but to handle tickets they need to switch to version 1.1.7.

**Updating existing offers**  
The reason for disabling all your open offers before updating to v1.2.0 is that during the process of updating the client if you don’t have your offers disabled there is a chance that an offer is taken and that would prevent you from updating. So in theory it is possible to update existing either live or disabled offers, but it should be done with disabled ones to prevent any unnecessary problems.

**Updating during a trade**  
If one peer is updating after a trade was opened it will fail with an exception on certain message exchanges. From that point on the trade can’t be finished by the peers alone, as we don’t support the usecase of downgrading back to 1.1.7 again. Still the peers can chat with each other to find out why the exception is occurring. The only way to solve this is over a manual payout through the arbitrator ([https://github.com/bisq-network/bisq-docs/blob/master/manual-dispute-payout.adoc](https://slack-redir.net/link?url=https%3A%2F%2Fgithub.com%2Fbisq-network%2Fbisq-docs%2Fblob%2Fmaster%2Fmanual-dispute-payout.adoc)).

**Update during a dispute**  
Same as **Updating during a trade** completing the trade is only possible over a manual payout through the arbitrator.