SyncResponse Issue

[VistoPartner]

Hello All,

I have a SyncRequest for Calendar folder as follows:

<soap:Envelope>
<soap:Header>
<context>
<authToken>
sometoken
</authToken>
<sessionId id="18598"/>
</context>
</soap:Header>
<soap:Body>
<SyncRequest token="1000" l="10"/>
</soap:Body>
</soap:Envelope>

The SyncResponse I got back is as follows:

<soap:Body>
<SyncResponse md="1231803671" token="5104">
<deleted ids="280,281,282,284,285,289,290,291,293,287,288"/>
<appt d="1230939824000" ms="3847" md="1230939831" f="" uid="8cca3f20-bd3d-4f02-9880-72c58a5ba5a2" t="" l="10" id="277"/>
<appt ms="4734" md="1231539768" uid="822db6c4-8d25-487f-aba1-71218a384674" l="10" id="283"/>
<appt ms="5092" md="1231795979" uid="2097a6ac-f832-4836-a11a-e67652340b52" l="10" id="279"/>
</SyncResponse>
</soap:Body>

I was trying to figure out why only for the 1st apoointment, I'm getting the date, but for the next 2 I don't see the date stamp. When I get the full Calendar by performing GetAppointmentRequest for each individual calendars, I get back the following:

I'm only putting here the <appt> tag of the result.

<appt d="1230939824000" ms="3847" md="1230939831" f="" uid="8cca3f20-bd3d-4f02-9880-72c58a5ba5a2" t="" l="10" s="2172" id="277" rev="3846">

<appt d="1231280810000" ms="4734" md="1231539768" f="" uid="822db6c4-8d25-487f-aba1-71218a384674" t="" l="10" s="4907" id="283" rev="4368">

<appt d="1230940689000" ms="5092" md="1231795979" f="" nextAlarm="1232155500000" uid="2097a6ac-f832-4836-a11a-e67652340b52" t="" l="10" s="2241" id="279" rev="3849">

Could anyone please help me to find out why the date stamp doesn't showup in SyncResponse for 2 calendars?

Thanks a lot,
- VistoPartner