If you want to place a mobile spawn point somewhere but you already have an APC out on the map, the APC squad should still be able to spawn destroying the one placed previously.
This would prevent you from not being able to put one out even though one of them is yours because 2 of your teammates are also putting out mobile spawns, and they are not getting destroyed after 2 objectives as the grey zone doesn’t consume them on some maps, just like in the picture I sent below.
(Top left APC is mine and there is no way to move it or spawn with another one)