The DeserializeJSON() function in ColdFusion converts an epoch date/time in JSON from something like: 1281364965000 to: 1.281364965E+012.
To prevent this from happening, you can use something like this:
<cfset jsonData = reReplace(jsonData, '([0-9]{13})', '"1"', 'ALL')>
Alternatively, to convert any number, 10 digits or more into a string to preserve the proper formatting, use something like this:
<cfset jsonData = reReplace(jsonData, '([0-9]{10,})', '"1"', 'ALL')>