Installing Lionel Tranmaster on AF layout

[arnoldafl]

I have a medium to large American Flyer S Gauge layout consisting of four blocks (2 main lines, yard and branch). Each block has two AF Transformers for track power in different locations, all properly phased. There is a common ground for all blocks. The blocks are separated by the 2 train operation ability of the AF switches (no insulating pins) so a transformer from one block can control a train going between blocks. Since I like to walk around the layout while trains are running and it is a hassle to run back to shut down the controlling transformer when a problem develops, I am installing Lionel's powermaster with remote control.

The question is what are the consequences of adding a powermaster to each main line block, continuing to use the switches to separate blocks unless turned and keeping the AF transformers also connected. If properly phased, will a powermaster connected to the track be damaged if power is applied by one of the AF transformers directly connected to the track or through another powermaster (one main line to the other through turned switches).

Bill