After you paste the line, you do not need to recreate the group – the new line is automatically part of the group.
1	After	after	SCONJ	_	_	3	mark	_	_
2	you	you	PRON	PERS-P2	_	3	nsubj	_	_
3	paste	paste	VERB	PRES	Mood=Ind|Tense=Pres|VerbForm=Fin	10	advcl	_	_
4	the	the	DET	DEF	Definite=Def|PronType=Art	5	det	_	_
5	line	line	NOUN	SG-NOM	Number=Sing	3	obj	_	SpaceAfter=No
6	,	,	PUNCT	Comma	_	3	punct	_	_
7	you	you	PRON	PERS-P2	_	10	nsubj	_	_
8	do	do	AUX	PRES	Mood=Ind|Tense=Pres|VerbForm=Fin	10	aux	_	_
9	not	not	PART	NEG	_	10	advmod	_	_
10	need	need	VERB	INF	VerbForm=Inf	0	root	_	_
11	to	to	PART	_	_	12	mark	_	_
12	recreate	recreate	VERB	INF	VerbForm=Inf	10	xcomp	_	_
13	the	the	DET	DEF	Definite=Def|PronType=Art	14	det	_	_
14	group	group	NOUN	SG-NOM	Number=Sing	12	obj	_	_
15	–	–	PUNCT	Dash	_	21	punct	_	_
16	the	the	DET	DEF	Definite=Def|PronType=Art	18	det	_	_
17	new	new	ADJ	POS	Degree=Pos	18	amod	_	_
18	line	line	NOUN	SG-NOM	Number=Sing	21	nsubj	_	_
19	is	be	AUX	PRES	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	21	cop	_	_
20	automatically	automatically	ADV	_	_	21	advmod	_	_
21	part	part	NOUN	SG-NOM	Number=Sing	10	parataxis	_	_
22	of	of	ADP	_	_	24	case	_	_
23	the	the	DET	DEF	Definite=Def|PronType=Art	24	det	_	_
24	group	group	NOUN	SG-NOM	Number=Sing	21	nmod	_	SpaceAfter=No
25	.	.	PUNCT	Period	_	10	punct	_	_
