TWO BUTTON CARDIGAN

This part in the first paragraph of RIGHT FRONT should be omitted:
“until work measures 8.5 (9, 9, 9.25)”/21.5 (22.5, 22.5, 23.5)cm = 46 (48, 48, 50) rows from beg of St st, end on WS”

It should read:
Cast on 43 (46, 50, 54) sts. Work in garter st for 2.5”/6.5cm = 19 rows, beg and end on WS. Cont even in St st.

HIGH WAIST PULLOVER

STITCH KEY
Original version:
1/1 RPKC - slip 1 st to cn and hold to back of work, p1 tbl, k1 from cn
1/1 LKPC - slip 1 st to cn and hold to front of work, k1, p1 tbl from cn

It should read:

1/1 RKPC - slip 1 st to cn and hold to back of work, k1, p1 tbl from cn
1/1 LPKC - slip 1 st to cn and hold to front of work, p1 tbl, k1 from cn

PULLOVER WITH INTERLOCKING CABLES

FRONT -  missing information is marked blue:
....AT SAME TIME, shape waist and armholes as for back. Cont even until armholes measure 6 (6, 6.5, 7, 7.5) / 15 (15, 16.5, 18, 19)cm, end with WS row.
Shape Neck
Next row (RS) Work 24 (28, 30, 32, 33) sts, place center 22 sts on holder, join another ball of yarn and work to end.....