# Using existing jobs with the latest version of Trimble Access

You can open .job (JOB) files created using a recent previous version of Trimble Access with the latest version of the software. Trimble Access automatically converts the job to the current version of the software.

Jobs upgraded to the latest version of Trimble Access cannot be used with previous versions of the software. Trimble recommends keeping a backup copy of the previous version of the job if some controllers in your organization are still using a previous version of Trimble Access.

To use jobs from Trimble Access 2016.xx and earlier on a controller running Windows, or jobs from Trimble Access 2018.xx and earlier on a controller running Android, you must first convert the jobs so that they are compatible with the latest version of Trimble Access.For a range of options on how to do this, refer to the support note Trimble Access: Converting jobs to a newer version, which can be downloaded from the Support bulletins page of the Trimble Access Help Portal.

## Use .job files in preference to .jxl files

It is possible to open .jxl (JXL or JobXML) files in Trimble Access, however Trimble recommends using the equivalent .job file in preference to the .jxl file if it is available.

JXL files are created by exporting the job files as a JXL file from Trimble Access, or by importing a JOB file to Trimble Business Center. A JXL file is an XML representation of the .job file.

While Trimble Access can create a new .job file from a .jxl file, it does not recreate the original job. When Trimble Access creates a job from a JXL file, it reads only the <Reductions> section of the XML file. The <Reductions> section of the file contains only point records, which means a .job file created from a .jxl file contains only keyed in points. If you have the original .job file and you upgrade it to the newest version of Trimble Access then the raw data is retained — you will see any feature coded linework, and you are able to edit data as you can in the original job, for example you can edit antenna or target heights, and you can add a calibration point to a site calibration.