Imported traces from the past are only shown after 15 minutes

I try to import telemetry data recorded with Open Telemetry Collector File Exporter. For import I use the OTLP JSON File Receiver in combination with docker-otel-lgtm. I ran into the problem that traces with a timestamp from the past are only shown after 15 minutes in Grafana. How can I make them available immediately in Grafana like traces with datetime now? Steps to reproduce: - start https://github.com/grafana/docker-otel-lgtm/blob/main/examples/dotnet/docker-compose.yml via docker compose up - send dummy trace with datetime now `curl -X POST http://localhost:4318/v1/traces \ -H "Content-Type: application/json" \ -d '{ "resourceSpans": [{ "resource": { "attributes": [{ "key": "service.name", "value": { "stringValue": "test-service" } }] }, "scopeSpans": [{ "scope": { "name": "test-scope" }, "spans": [{ "traceId": "'"$(openssl rand -hex 16)"'", "spanId": "'"$(openssl rand -hex 8)"'", "name": "TestSpan", "kind": 1, "startTimeUnixNano": "'"$(date +%s%N)"'", "endTimeUnixNano": "'"$(($(date +%s%N) + 100000000))"'", "attributes": [{ "key": "custom.tag", "value": { "stringValue": "trace-test" } }], "status": { "code": 1 } }] }] }] }'` - send dummy trace with datetime - 6h `curl -X POST http://localhost:4318/v1/traces \ -H "Content-Type: application/json" \ -d '{ "resourceSpans": [{ "resource": { "attributes": [{ "key": "service.name", "value": { "stringValue": "test-service" } }] }, "scopeSpans": [{ "scope": { "name": "test-scope" }, "spans": [{ "traceId": "'"$(openssl rand -hex 16)"'", "spanId": "'"$(openssl rand -hex 8)"'", "name": "TestSpan", "kind": 1, "startTimeUnixNano": "'"$(date -d '6 hours ago' +%s%N)"'", "endTimeUnixNano": "'"$(($(date -d '6 hours ago' +%s%N) + 100000000))"'", "attributes": [{ "key": "custom.tag", "value": { "stringValue": "trace-test" } }], "status": { "code": 1 } }] }] }] }'` - TraceQL: {} Time Ragne Last 12h => Dummy trace with date time now is show immediately, dummy trace with date time -6h is only returned if query is executed 15 minutes after sending the trace. How can I fix this problem. Is there a special tempo-config setting for?