Mendix version downgrade from 10.15 to 10.12

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I have a project on Mendix 10.15.0, but now I want to downgrade Mendix version to 10.12.0. Is there a way to transfer project to lower Mendix version or should I impelement everything again?
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2 answers
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There is one undocumented and unsupported way for downgrading modules.

 

Export your module without any references. Unzip .mpk file with 7ZIP. Edit the .mpr file. Find the version number , in your case 10.15.

 

Do the same for any module in the mendix version you need to downgrade to, in your case 10.12 and find the complete hash code of the 10.12 version , for 10.12.9 it is u10.12.9.4947510.12.9.49475{SHA256}pclfWHPHNCuZEMijXU7kFbW8JwkYMe3kSGVEduyjGgk=

 

Replace that complete string with the one you found on the 10.15 version . Save the .mpr file , Zip it again in the mpk file. Now you can import it in 10.12.9

 

It is a little bit hard work, and will not always work with all downgrades, but if you stay in the same major version 90 % will work, it is always less work then complete overwriting the module.....

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There's MprTool.exe in the Mendix installation folder. It has "Edit Metadata" menu item where you can try to change the version. It usually works when you downgrade within the same major.minor version. However, when minor version is different it usually means that the project structure has changed and most likely an older Studio will fail to open the project.

 

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