Conversion help! Java to Bedrock?

[Dominicshortbow]

Does anyone know any converter to convert a world from java to bedrock for free?
I have one converter but it breaks my world when I do 1.15 to the latest version.

I need help with finding a converter so @temmmie could start helping me on a MM map with terrain, trees, and other decorations!!!!

 

[eccedxntesiilast]

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[Dominicshortbow]

That's what I am using, it doesn't go past 1.15 too well! Like it would change Blackstone slabs into purpur slabs. And if the slabs were on top half, it would change to bottom half and break all the redstone on top!

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