REDRILL OF AN ANCHOR

We are going to install new baseplates by resin anchors HIT RE500 V3 HAS-V36 for new platforms over an existing floor after old equipment dissassembly. I am worried about having to redrill the concrete slab in the same area where an existing anchor has been left. What do I have to consider apart from steel drilling bits? also anchor capacity reduction? any warnings? Thanks in advance.