I’ve successfully upgraded a v13 > v17 Cloud site locally, then pushed to a new Flexible Environment on Cloud and all looks good.
Unfortunately I failed to do a Media Tree restore from the v13 environment prior to pushing the v17 upgrade and now cannot do a restore from the v13 site - at least Deploy fails with an exception that (I assume) is related to the different versions of Deploy.
Is there a way to restore the Media at this point? Or does it seem like I’ll need to repeat this process with a new Environment making sure to do a Media Tree restore prior to upgrading to v17?
I was able to solve this by using the Export/Import feature from Deploy. Exported from the v13 environment and Imported to the v17 environment. Took a few tries and initially ran into a file is too large exception. The file was 328mb and the docs say the default for Cloud is 500mb, but I think that may be incorrect as I believe it is actually 50mb. In any case, adding this to web.config allowed the larger upload.
Based on this experience I’d say best practice is to make sure all content and media is present bdefore doing the environment merge, but in the case that doesn’t happen, Deploy’s Import/Export works.