Yes, if you are using different machines with the RP on it, then you need to update the machine when you log back in. The RP checks for differences in the M1's programming compared to what the RP database has in it. You can disable that feature, but why? Once you make changes on one machine using RP, you then send it to the control and save it on the local database. When you connect with a different machine, the database on the machine is different than that compared in the M1. This is all covered in the RP users manual.