Over the last week I could work on a new migration strategy which follows the full export full import approach which we are using pretty often in Plone migration projects. We intended to use Transmogrier first but it is currently just not available in a working state for Plone 5.2 and Python 3.
This sounds interesting!
Have you tried it on a large site? How much time it takes to migrate it?
Waiting for new details and see some code..and maybe a ploneconf talk proposal soon
it will not be slower/faster than standard full export/import over RestAPI. In the end is the target system the bottleneck and not the migrating process.
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