you need to update your cr but if you have ps cs6, you can only update to 9.1.1. ie, you need to update your photoshop and the photographers plan is the most economical way to do that, https://creative.adobe.com/plans
Be sure that the raw files are accompanied by xmp sidecar files. Those files contain the "edits". The edit data can also be stored in a camera raw database. That database will not move with the files. Manage Adobe Camera Raw settings
As kglad suggests, you have better to be at the same level of the software, as indeed there have been big changes in the development parameters.