Try to see if you're able to show me some of the settings used to export the file with a screenshot (like when you export for blender), you can also tell me the versions of the programs you're using as well so I can try to find out why this is happening, it hasn't happened with my own models (with the shape keys at least) like this manner
version 1
nodes
0 "blender_implicit" -1
1 "Spine" -1
2 "Chest" 1
3 "Neck" 2
4 "Head" 3
5 "Ear_L" 4
6 "Ear_R" 4
7 "LeftEye" 4
8 "RealLeftEye" 4
9 "RealRightEye" 4
10 "RightEye" 4
11 "Shoulder_L" 2
12 "UpperArm_L" 11
13 "LowerArm_L" 12
14 "Hand_L" 13
15 "Index_L" 14
16 "IndexMid_L" 15
17 "IndexTip_L" 16
18 "Middle_L" 14
19 "MiddleMid_L" 18
20 "MiddleTip_L" 19
21 "Pinkie_L" 14
22 "PinkieMid_L" 21
23 "PinkieTip_L" 22
24 "Ring_L" 14
25 "RingMid_L" 24
26 "RingTip_L" 25
27 "Thumb_L" 14
28 "ThumbMid_L" 27
29 "ThumbTip_L" 28
30 "Shoulder_R" 2
31 "UpperArm_R" 30
32 "LowerArm_R" 31
33 "Hand_R" 32
34 "Index_R" 33
35 "IndexMid_R" 34
36 "IndexTip_R" 35
37 "Middle_R" 33
38 "MiddleMid_R" 37
39 "MiddleTip_R" 38
40 "Pinkie_R" 33
41 "PinkieMid_R" 40
42 "PinkieTip_R" 41
43 "Ring_R" 33
44 "RingMid_R" 43
45 "RingTip_R" 44
46 "Thumb_R" 33
47 "ThumbMid_R" 46
48 "ThumbTip_R" 47
49 "Tail_001" -1
50 "Tail_002" 49
51 "Tail_003" 50
52 "Tail_004" 51
53 "Tail_005" 52
54 "Tail_006" 53
55 "Tail_007" 54
56 "Tail_008" 55
57 "UpperLeg_L" -1
58 "LowerLeg_L" 57
59 "Foot_L" 58
60 "Toes_L" 59
61 "UpperLeg_R" -1
62 "LowerLeg_R" 61
63 "Foot_R" 62
64 "Toes_R" 63
end
skeleton
time 0
time 1 # vrcblinkleft
time 2 # vrcblinkright
time 3 # vrclowerlidleft
time 4 # vrclowerlidright
time 5 # vrcvaa
time 6 # vrcvch
time 7 # vrcvdd
time 8 # vrcvee
time 9 # vrcvff
time 10 # vrcvih
time 11 # vrcvkk
time 12 # vrcvnn
time 13 # vrcvoh
time 14 # vrcvou
time 15 # vrcvpp
time 16 # vrcvrr
time 17 # vrcvsil
time 18 # vrcvss
time 19 # vrcvth
time 20 # ClosedEyes
time 21 # Shocked
time 22 # Angry
time 23 # Annoyed
time 24 # Happy
time 25 # Sad
time 26 # Disgusted
time 27 # Blep
time 28 # Grin
time 29 # Confused
time 30 # Upset
end
vertexanimation
time 0
0 0.053906 0.011971 1.755987 0.888436 -0.115400 0.444258
1 0.065291 -0.004314 1.732370 0.676051 -0.366616 0.639177
These numbers keep going on, but this is what a VTA file looks like, in case you need a reference