I used the following json to create the index-pattern, the index-pattern is empty but the name. no fields in it.
{
"attributes": {
"fields": "[{"name":"@timestamp","type":"date","esTypes":["date"],"count":0,"scripted":false,"searchable":true,"aggregatable":true,"readFromDocValues":true}]",
"timeFieldName": "@timestamp",
"title": "alarms_index-*"
},
"migrationVersion": {
"index-pattern": "7.8.0"
},
"references":
}
thanks