This seems odd and I don't know why GLTF is causing the shape key info to be lost, does exporting as SMD keep the flex poses in different frames? SMD should export the poses in different frames based on the qc compilation
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