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12. Section 4.4.5: This section states that EXI Date-Time values MUST be canonicalized according to the XML Schema dateTime canonical representation. While this definition might be convenient, it is not entirely appropriate for canonicalization and will lead to surprising results for some. The canonical form for XML Schema dateTime values is defined to make it easy to determine whether two Date-Time values refer to the same instant, regardless of the timezone used. However, for many applications, the Date-Time timezone is an important piece of information that should be preserved. As such, it will be surprising if the digital signature is not able to detect changes to this information. In addition, those using canonical EXI as a transmission format will be surprised if the canonical EXI format loses all their timezone information and changes all Date-Time values to GMT. Recommend this section be updated to exclude canonicalization of timezones in Date-Time values.