diff --git a/qiskit_pulse_control/json.py b/qiskit_pulse_control/json.py
index d949386..7b6bd2d 100644
--- a/qiskit_pulse_control/json.py
+++ b/qiskit_pulse_control/json.py
@@ -1,4 +1,5 @@
 from collections.abc import Callable
+import collections
 import json
 from typing import Any
 
@@ -21,6 +22,13 @@ def default(self, any_object: Any) -> Any:
         if isinstance(any_object, unified_job.Job):
             return self._encode_job(any_object)
         if isinstance(any_object, unified_job.ExperimentJob):
+            # fix https://github.com/qiskit-community/qiskit-experiments/issues/1508
+            copied_experiment = any_object.experiment.copy()
+            experiment_kwargs = getattr(copied_experiment, '__init_kwargs__',
+                                        collections.OrderedDict())
+            if 'backend' in experiment_kwargs:
+                del experiment_kwargs['backend']
+
             encoded_value = {
                 'jobs': [self._encode_job(job) for job in any_object.jobs],
                 'experiment':
diff --git a/qiskit_pulse_control/unified_job.py b/qiskit_pulse_control/unified_job.py
index 1438c9c..a4b4db9 100644
--- a/qiskit_pulse_control/unified_job.py
+++ b/qiskit_pulse_control/unified_job.py
@@ -109,7 +109,6 @@ def experiment_data(self) -> framework.ExperimentData:
             return self._experiment_data
         self._experiment_data = framework.ExperimentData(
             experiment=self.experiment)
-        # TODO: check if the runtime jobs is done
         if all(job.status == providers.JobStatus.DONE for job in self.jobs):
             for job in self.jobs:
                 # .add_data() cannot handle PrimitiveResult. The `job_id`
@@ -124,6 +123,11 @@ def experiment_data(self) -> framework.ExperimentData:
             for job in self.jobs:
                 self._experiment_data.add_jobs(
                     [job.runtime_job for job in self.jobs])
+            if (self._experiment_data.status() ==
+                    framework.ExperimentStatus.DONE):
+                self.experiment.analysis.run(
+                    self._experiment_data, replace_results=True)
+                self.analysis_result = self._experiment_data.analysis_results()
         return self._experiment_data