You can if you use FSUIPC. The config file from FSUIPC(FSX?P3D) can be moved to FSUIPC7 (MSFS). Other key emulation programs like Axis & Ohs and SPAD.Next will also create templates or profiles that can be used to move settings from one computer to another. Both of the above mentioned programs have an extensive online library of different aircraft settings. Be aware, however, that seldom are any of these a perfect fit.Problem you can not export the key-settings from MSFS.
It's for a friend on mine who just started with MSFS from FSX.
I know i've modified several keys and also joystick mapping to get the same effects as in FSX. I know it was from a post overhere.
Marcel