Problem with DPX frame naming in version 3.1.3-b11597

When running version 3.1.3-b11597 and converting from .MXF to DPX the naming of the DPX frames is being cut off.
Source file JOE_18017_VAM_420827.mxf DPX rendered file name is JOE_18017_VAM_frame number. The folder name that contains the DPX is correct but the actual frame names are not. When i roll the system back to version 3.1.3-b11457 the naming is correct.

We made some changes to how DPX files are named in this version. We will look into it.