When last_version is deleted, do not delete text and previous versions in cascade, but really delete text only when there is no previous version, otherwise update text.last_version with previous version.
[
{
"pk": 1,
"model": "cm.configuration",
"fields": {
"key": "site_name",
"raw_value": "S'New co-ment workspace'\np0\n."
}
},
{
"pk": 2 ,
"model": "cm.configuration",
"fields": {
"key": "test",
"raw_value": "S'simple test'\np0\n."
}
}
]