In the Operation Overdrive team-up "Once A Ranger", the Morphing Grid was damaged by the combined powers of Thrax, Flurious, Moltor, Miratrix, Kamdor, Mig, and Benglo. The grid was shown to have massive electric surges firing off inside. When the Sentinel Knight restored the Veteran Rangers' powers, it was shown that the only part of the grid that had been damaged was the section that connected to the Overdrive Rangers. Andrew Hartford managed to reinforce the Grid to prevent further damage, but it had to be repaired from the inside, which Alpha 6 did.(source)
Isto significa que o Morphing Grid é distributivo, mas requer muito esforço, e depende do dono da franquia para terminar a série Power Ranger ou continuar.
Não há informações sobre se a Operação Overdrive não é canônica, então podemos pensar que ela é canônica também.
Each team of Rangers has a specific link to the Morphing Grid(source).
Seu único trovão de Dino onde está claro que a Grade Morphing tem significado físico.
In Season 2 of MMPR, it was mentioned by Lord Zedd that the Grid is maintained by a balance between the major forces of Good and the major forces of Evil, i.e. in that time period, Zordon and Lord Zedd.(source)
Então, isso significa que é Yin e Yang : a grade permanecerá não-destrutiva até que haja equilíbrio entre o bem e o mal.