I don't believe that. The pic posted by @bababooey says it all. The renumbering has nothing to with respect for the original numbering, the only desire was to get as quickly as possible to a massive number, which 'justifies' another hoard of variants in order to boast the sales. Therefore, I think the so-called legacy numbering will last for 25-30 issues at most. At that time they will be around #815-820, a year will have passed since the #800 and sales will have dropped again to the standard level. They will need another artificial way to increase interest and sales and a #825 will not do it.
If they had true respect for the orginal series and numbering, ASM would have restarted at 701 after Superior Spider-Man, just as they did after the brief interruption by Amazing Scarlet Spider. That would have made volume 3: 701-718 and volume 4: 719-750. I think they didn't want to do that as it would have meant that the big #750 (ASM vol4 #32) would be a simple tie-in.