The bulk update request #2859 is pending approval.
create alias open-back_dress (0) -> backless_dress (1336)
create alias open_back_dress (41) -> backless_dress (1336)
create implication backless_dress (1336) -> backless_clothing (2002)
create implication backless_dress (1336) -> dress (87503)
create alias open-back_leotard (197) -> backless_leotard (250)
create implication backless_leotard (250) -> backless_clothing (2002)
create implication backless_leotard (250) -> leotard (15832)
create alias open-back_swimsuit (504) -> backless_swimsuit (601)
create implication backless_swimsuit (601) -> backless_clothing (2002)
create implication backless_swimsuit (601) -> one-piece_swimsuit (19984)
create alias open-back_sweater (5) -> backless_sweater (4)
create alias open_back_sweater (13) -> backless_sweater (4)
create implication backless_sweater (4) -> backless_topwear (30)
create implication backless_sweater (4) -> backless_clothing (2002)
create implication backless_sweater (4) -> sweater (38771)
create alias open-back_shirt (0) -> backless_shirt (7)
create implication backless_shirt (7) -> backless_topwear (30)
create implication backless_shirt (7) -> backless_clothing (2002)
create implication backless_shirt (7) -> shirt (332634)
create alias open-back_topwear (3) -> backless_topwear (30)
create implication backless_topwear (30) -> backless_clothing (2002)
create implication backless_topwear (30) -> topwear (553258)
create alias open-back_clothing (10) -> backless_clothing (2002)
create implication backless_clothing (2002) -> clothing (2111598)
Reason: "backless" is used for 14 tags while "open-back" is only used for 6 tags as of now. "Backless" seems to be the preferred term: Wikipedia