The bulk update request #2859 is pending approval.
create alias open-back_dress (0) -> backless_dress (1450)
create alias open_back_dress (58) -> backless_dress (1450)
create implication backless_dress (1450) -> backless_clothing (2159)
create implication backless_dress (1450) -> dress (104818)
create alias open-back_leotard (198) -> backless_leotard (268)
create implication backless_leotard (268) -> backless_clothing (2159)
create implication backless_leotard (268) -> leotard (20198)
create alias open-back_swimsuit (507) -> backless_swimsuit (680)
create implication backless_swimsuit (680) -> backless_clothing (2159)
create implication backless_swimsuit (680) -> one-piece_swimsuit (23058)
create alias open-back_sweater (5) -> backless_sweater (6)
create alias open_back_sweater (15) -> backless_sweater (6)
create implication backless_sweater (6) -> backless_topwear (34)
create implication backless_sweater (6) -> backless_clothing (2159)
create implication backless_sweater (6) -> sweater (47923)
create alias open-back_shirt (0) -> backless_shirt (9)
create implication backless_shirt (9) -> backless_topwear (34)
create implication backless_shirt (9) -> backless_clothing (2159)
create implication backless_shirt (9) -> shirt (399010)
create alias open-back_topwear (3) -> backless_topwear (34)
create implication backless_topwear (34) -> backless_clothing (2159)
create implication backless_topwear (34) -> topwear (669770)
create alias open-back_clothing (11) -> backless_clothing (2159)
create implication backless_clothing (2159) -> clothing (2463760)
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