How to migrate from basic process to agile?

[MoisesG2022]

I need to migrate from one organization to another with different Basic processes --> Agile, but nose how to use the FieldMaps, could I guide a little please, thanks and good day.

{

"ChangeSetMappingFile": null,
"Source": {
"$type": "TfsTeamProjectConfig",
"Collection": "https://dev.azure.com/.../",
"Project": "...",
"ReflectedWorkItemIDFieldName": "Custom.ReflectedWorkItemId",
"AllowCrossProjectLinking": false,
"PersonalAccessToken": "...",
"PersonalAccessTokenVariableName": "",
"LanguageMaps": {
"AreaPath": "Area",
"IterationPath": "Iteration"
}
},
"Target": {
"$type": "TfsTeamProjectConfig",
"Collection": "https://dev.azure.com/.../",
"Project": "...",
"ReflectedWorkItemIDFieldName": "ReflectedWorkItemId",
"AllowCrossProjectLinking": false,
"PersonalAccessToken": "...",
"PersonalAccessTokenVariableName": "",
"LanguageMaps": {
"AreaPath": "Area",
"IterationPath": "Iteration"
}
},
"FieldMaps": [
{
"$type": "FieldValueMapConfig",
"WorkItemTypeName": "*",
"sourceField": "System.State",
"targetField": "System.State",
"defaultValue": "New",
"valueMapping": {
"Approved": "New",
"New": "New",
"Committed": "Active",
"In Progress": "Active",
"Doing": "Active",
"To Do": "New",
"Done": "Closed",
"Removed": "Removed"
}
}

],
"GitRepoMapping": null,
"LogLevel": "Information",
"CommonEnrichersConfig": null,
"Processors": [
{
"$type": "WorkItemMigrationConfig",
"Enabled": true,
"ReplayRevisions": true,
"PrefixProjectToNodes": false,
"UpdateCreatedDate": true,
"UpdateCreatedBy": true,
"WIQLQueryBit": "AND [Microsoft.VSTS.Common.ClosedDate] = '' AND [System.WorkItemType] NOT IN ('Test Suite', 'Test Plan','Shared Steps','Shared Parameter','Feedback Request')",
"WIQLOrderBit": "[System.ChangedDate] desc",
"LinkMigration": true,
"AttachmentMigration": true,
"AttachmentWorkingPath": "c:\temp\WorkItemAttachmentWorkingFolder\",
"FixHtmlAttachmentLinks": true,
"SkipToFinalRevisedWorkItemType": true,
"WorkItemCreateRetryLimit": 5,
"FilterWorkItemsThatAlreadyExistInTarget": false,
"PauseAfterEachWorkItem": false,
"AttachmentMaxSize": 480000000,
"AttachRevisionHistory": false,
"LinkMigrationSaveEachAsAdded": false,
"GenerateMigrationComment": true,
"WorkItemIDs": null,
"MaxRevisions": 0,
"NodeStructureEnricherEnabled": null,
"UseCommonNodeStructureEnricherConfig": false,
"StopMigrationOnMissingAreaIterationNodes": false,
"NodeBasePaths": [],
"AreaMaps": {},
"IterationMaps": {},
"MaxGracefulFailures": 0,
"SkipRevisionWithInvalidIterationPath": false
}
],
"Version": "13.0",
"workaroundForQuerySOAPBugEnabled": false,
"WorkItemTypeDefinition": {
"sourceWorkItemTypeName": "targetWorkItemTypeName"
},
"Endpoints": {
"InMemoryWorkItemEndpoints": [
{
"Name": "Source",
"EndpointEnrichers": null
},
{
"Name": "Target",
"EndpointEnrichers": null
}
]
}
}