Hey Kirsten, Thanks for pointing this out. We are working on preventing
users to get in these cases and also adding more meaningful, actionable
error messages.Despite the fact you remove card references in the
layouts (or layout references in collections), unless you publish the
changes in the layout (collection) you will not be allowed to unpublish
the card or layout you want (you'll get an update failed error).We want
to address this, yet in the meantime, the approach that will always work
is ...