Currently using BC14 with C/AL changes. (non extension).
Which upgrade path should I take?
I was planning to use this path --> https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/upgrade/upgrade-to-microsoft-base-app-v21
But it seems wrong, as there are no steps here to convert from C/AL to A/L.
https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/devenv-txt2al-tool . The quickest way is to use Docker and the CmdLet Convert-ModifiedObjectsToAl. You need the baseline of the objects and deltas for all modifications, and a container which matches your BC 14 version facilitates that considerably. https://github.com/Microsoft/navcontainerhelper/blob/master/ObjectHandling/Convert-ModifiedObjectsToAl.ps1.