Backwards compatibility and upgrade path complexity

Omeka Classic
1

Hello Omeka folks, I’m preparing a slide for ADE 2017 (Buffalo, NY) and I’m looking for some information on Omeka.

CMS Comparison Chart for Documentary Editions
https://1drv.ms/x/s!AuCG4_XKsH2b7Un3Xji3_RkPnSv-

I’m specifically looking for the 2 cells in red:

  1. Backwards compatibility between major releases
    Does the new system maintain and recognize the prior system data?

  2. Upgrade path complexity
    Does a new system version require a lot of technical work?

This obviously applies to self-hosted instances, not Omeka.net.

Thanks for any insights! And, happy to discuss the metrics and any other possible comparative factors which may be useful.

BEN BAKELAAR, MLIS
Digital Architect
Thomas A. Edison Papers
Rutgers, The State University of New Jersey