Failed to export HTTP objects from an export-PDU file

After I decrypted the SSL session in a capture file and saved the decrypted data to a new pcap file by "export PDUs to file" function, I was failed to export the HTTP objects from the export-PDU file. Seems wireshark doesn't reassemble the HTTP payload. Is there any way I can export the complete http objects from this export-PDU file?

The output of tshark when reading this export-PDU file:

tshark -r export_PDU.pcap

 1 0.000000000 230  10.140.8.27 → 10.79.46.117 HTTP GET /wiresharkdoc.ico HTTP/1.1  exported_pdu:http
    2 0.002855000 348 10.79.46.117 → 10.140.8.27  HTTP HTTP/1.1 200 OK  exported_pdu:http
    3 0.002855000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
    4 0.002930000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
    5 0.002939000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
    6 0.002941000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
    7 0.002943000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
    8 0.002945000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
    9 0.005285000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   10 0.005285000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   11 0.005291000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   12 0.005292000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   13 0.005758000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   14 0.005758000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   15 0.005959000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   16 0.006866000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   17 0.006902000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   18 0.006909000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   19 0.006911000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   20 0.008352000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   21 0.008366000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   22 0.008426000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   23 0.010263000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   24 0.010309000 16456 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data
   25 0.010320000 12150 10.79.46.117 → 10.140.8.27  HTTP Continuation exported_pdu:http:data