Servlet API Changes in Build 8313

Good Morning,

We recently updated our system to 8.3 Build 8313 and are now experiencing problems with our servlet API calls to create work logs. Our scripts have not been modified but we are now receiving the error 'WorkLog cannot be added due to Error Occuered While Loading Form Attributes to DO' in response from the API call. Has something changed in this version that has caused these errors?

https://manageengingIP/servlets/RequestServlet

The current parameters we were using successfully prior to the upgrade are:
operation='AddWorkLog'
username=<USERNAME>
password=<PASSWORD>
DOMAIN_NAME=<DOMAIN>
workOrderID='12345'
startTime=<TIME IN SECONDS> - ex. 1443097800000
endTime=<TIME IN SECONDS> - ex. 1443103200000
workHours='1'
workMinutes='30'
description='Test worklog'

Am I doing something wrong??

Thanks,
Casey Martin