Why didn't extra vlans get deleted after enabling VTP Pruning?

Question

Cisco

Good afternoon. Cisco cluster, 15 switches (3750+14*2960).
On one tsiska there are all vlans, and on the second - only those that are used on it.
Why is this happening? I would like to load only those vlans that are used on the switch, and not all in a row.
The VTP Pruning option is enabled on the VTP server
First tsiska (all vlans sucked)

adsu3_obshegitie#sh vtp s
VTP Version : running VTP2
Configuration Revision : 0
Maximum VLANs supported locally : 255
Number of existing VLANs : 252
VTP Operating Mode : Transparent
VTP Domain Name : adsu
VTP Pruning Mode : Disabled
VTP V2 Mode : Enabled
VTP Traps Generation : Disabled
MD5 digest : 0xFF 0xE6 0x5E 0x9C 0xB3 0x6C 0x34 0x45
Configuration last modified by 10.0.0.31 at 11-26-15 12:08:44

The second tsiska, on it only the necessary

OLD_ATS#sh vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 250
Number of existing VLANs : 19
VTP Operating Mode : Transparent
VTP Domain Name : adsu
VTP Pruning Mode : Disabled
VTP V2 Mode : Enabled
VTP Traps Generation : Disabled
MD5 digest : 0x31 0x1C 0xD5 0xAE 0x94 0x42 0xF1 0x68
Configuration last modified by 10.0.0.35 at 2-17-16 05:58:37

VTP server, 3750G

adsu0#sh vtp status
VTP Version : 2
Configuration Revision : 386
Maximum VLANs supported locally : 1005
Number of existing VLANs : 271
VTP Operating Mode : Server
VTP Domain Name : adsu
VTP Pruning Mode : Enabled
VTP V2 Mode : Enabled
VTP Traps Generation : Enabled
MD5 digest : 0x72 0xCB 0xFB 0x03 0x8D 0x5E 0x64 0x20
Configuration last modified by 10.0.0.18 at 2-17-16
07:21:20

Answer 1

It is very likely that the first tsiska was in Client mode before, and therefore sucked everything that was needed. In Transparent mode, they should not pay attention to your server at all.