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BDS-12194

Unable to connnect to server when using map from Old versions

"Unable to connect to server" are shown to players when I use maps created in older versions (around 1.16.2? ) in BDS 1.16.210.06 . And at the same time, there shows no delay as if the server does no exist.

However, when I deleted the old map and let BDS to generate a new one, we all can connect into it.

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1: Confirming this issue using a local server on Windows 10. Client version 1.16.210.06, Server version 1.16.210.06 - Previously 1.16.210.02

2: This may or may not be a viable workaround, but I was able to circumvent the issue as follows:

   - Close BDS. Create backup copy of world folder.
   - Rename "old" world folder so BDS generates a new one.
   - Reopen BDS and connect with a player to generate the world.
   - Close BDS. Copy both worlds into primary Minecraft world folder (this step is not strictly necessary, just a function of my setup.)
   - Copy db folder from original world folder into new world folder, overwriting.
   - Open level.dat for original world and new world (using MCC Toolchest PE, if it matters) and adjust values for relevant entries - mostly current time/tick, spawn location, etc.
   - Save. Copy resulting world folder back to BDS world path.

When I reopened BDS and Minecraft, I was able to connect normally and - more importantly - the old world had "ported" over without any issue.

My suspicion is that something changed in the level.dat which is causing this issue, but I lack the programming skill to go any further.

For obvious reasons, I would suggest keeping an unaltered backup copy of your world if you should choose to use this workaround. I'm sure it will be patched soon enough. Additionally, I'm sure you could just edit the level.dat and copy it from the "good" world to the old one without all the extra steps, but I wasn't sure anything I was doing would work.

Either way, hope this helps.

Best,
Chris

1: Confirming this issue using a local server on Windows 10. Client version 1.16.210.06, Server version 1.16.210.06 - Previously 1.16.210.02

2: This may or may not be a viable workaround, but I was able to circumvent the issue as follows:

   - Close BDS. Create backup copy of world folder.
   - Rename "old" world folder so BDS generates a new one.
   - Reopen BDS and connect with a player to generate the world.
   - Close BDS. Copy both worlds into primary Minecraft world folder (this step is not strictly necessary, just a function of my setup.)
   - Copy db folder from original world folder into new world folder, overwriting.
   - Open level.dat for original world and new world (using MCC Toolchest PE, if it matters) and adjust values for relevant entries - mostly current time/tick, spawn location, etc.
   - Save. Copy resulting world folder back to BDS world path.

When I reopened BDS and Minecraft, I was able to connect normally and - more importantly - the old world had "ported" over without any issue.

My suspicion is that something changed in the level.dat which is causing this issue, but I lack the programming skill to go any further.

For obvious reasons, I would suggest keeping an unaltered backup copy of your world if you should choose to use this workaround. I'm sure it will be patched soon enough. Additionally, I'm sure you could just edit the level.dat and copy it from the "good" world to the old one without all the extra steps, but I wasn't sure anything I was doing would work.

Either way, hope this helps.

Best,
Chris

Thank you Chris.  I'm having this same issue on not being able to connect to my 1.16.210.02 world to the new BDS version.  I will check out your workaround. 

Thank you Chris.  I'm having this same issue on not being able to connect to my 1.16.210.02 world to the new BDS version.  I will check out your workaround. 

I solved it. Thanks for the inspiration of ideas in BDS-12155. You can see it and try to do it in MCCToolChest or other editors.

I solved it. Thanks for the inspiration of ideas in BDS-12155. You can see it and try to do it in MCCToolChest or other editors.

Thank you for your report!
We're tracking this issue in BDS-12034, so this ticket is being resolved and linked as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

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Thank you for your report!
We're tracking this issue in BDS-12034, so this ticket is being resolved and linked as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 BDS Wiki – 📖 FAQs
-- I am a bot. This action was performed automatically! Please report any issues on Discord or Reddit

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