You can delete the one added member that bumped the rest, to restore the
other members, you need to select the group (using shift-click) then
DRAG them over one, drag relocating members updates the score referencs
Sounds like you have some fragile Lingo that could be made more rebulst
by referencing members by name, or in the sort of case where you are
referencing one of a block of 10 members, you can just name the first
member of the block and reference from there.
groupElement = 5 - 1
member member("baseMember").memberNum + groupElement
returns the number of the 5th member of the group, as long as the group
of 10 are moved around as a block the script won't break.