We want to upgrade to version 8 from version 7.23.6. Has anybody moved their production systems to version 8?

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Hi all We want to upgrade to version 8 from version 7.23.6. Has anybody moved their production systems to version 8? Are there any hidden problems that were encountered  or is it safe to upgrade. We have quite a few custom widgets which gave us problem from version 5 to 6 and then from 6 to 7. We also had auto commit problems were some of our entities just disappeared. We would like to upgrade now because 95 percent of our clients are locked down, i just want to be sure there are no major hidden issues. Regards, Patrick
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Hi Patrick,

For upgrade, the biggest breaking change is the DOM structure. So depending on the styling of the project you might need to do so work https://docs.mendix.com/refguide/moving-from-7-to-8#9-2-dom-and-atlas-ui-issues

From the widget API, some function have been removed (They where deprecations in Mx7). This might break some of you custom made widgets. More and more app store widgets have been update. (There was a tool to help you out, but it not recently updated :( https://github.com/mendix/mx-check-deprecations ) Maybe one knows an alternative.

A common issue https://forum.mendix.com/link/questions/94688

If you are depending on “private” Mendix API (undocumented) you can face some problems as many Core has changed much.

When you are stuck you can reach out to me via the Community Slack Channel.

Cheers, Andries

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