Action macro files are similar to scripts; except they are created by performing actions directly inside of the application instead of adding commands and command options to an ASCII text file.
Action macros are stored in XML files with the file extension .actm and should work in the latest release similar to script files. As with script files, deprecated or changed commands in the latest release can affect whether an action macro will playback correctly or not.
Action macro (ACTM) files by default are stored under the user’s Roaming profile, but the location can be changed on the Files tab of the Options dialog box. It is recommended to store ACTM files in a shared location that multiple users can access if they are designed to be shared, and not your local Roaming profile.
The default folder used to store action macros is:
%AppData%\Autodesk\<product name>\<release>\<language>\Support\Actions