Clear spacing between new and abandoned Hilti KB TZ2

Hi, we are replacing equipment in an existing building. The existing equipment is anchored with Hilti KB TZ anchors. The replacement equipment will be anchored with Hilti KB TZ2 anchors. Where the existing anchors are abandoned in place, what is the minimum spacing between and new and old anchors for the new anchors to have full capacity?
Where the old anchors need to be removed, do you have a removal procedure that you recommend?
Thanks
Irene