Shaft & Holder avoidance is super useful, but unfortunately once you avoid an area, there's no good way to accurately pick up the remaining toolpath. This is particularly true for finishing operations, where you really want the tool to pick up at the exact position where the previous tool left off. The only method i'm aware of is using rest machining to detect remaining material, and it's just not precise enough. It also comes with unnecessarily long computation times, as in theory we already know what needs to be machined to a great degree of precision; it was already calculated and dismissed, so spending a good degree of computation trying to find it seems silly.
It would be excellent if the trimmed toolpath itself were stored and made accessible to future operations. That way, you could generate the exact toolpath you want without Shaft & Holder, enable Shaft & Holder for the initial tool, then come back with a longer tool, or multi-axis tilting, in precisely the areas that were trimmed.