Urgent!--putty copy and paste will exit the current config line

[petercinvest]

I have access list 100

access-list 100 permit icmp any any

access-list 100 deny tcp any any

access-list 100 permit 122.1.1.0 0.0.0.255

I want to remove last line 

I go to config T

R01(config)#ip access-list extended 100

I copy permit 122.1.1.0 0.0.0.255, I use Ctrl+C, because, if I right click mouse, there is no copy in putty
R01(config-ext-nacl)#

below happens:

R01(config-ext-nacl)#
%SYS-5-CONFIG_I: Configured from console by console
R01#

I don't want to go to line "R01#", I want copy/paste to be in the current line:R01(config-ext-nacl)#, how to do ?

everytime I copy the line in putty session.once after I use ctrl+C, it auto return back to R01#, I want copy/paste in the current line, say : 

R01(config-if)# ,  R01(config-ext-nacl)#

anyone has solution?

[Iulian Vaideanu]

By default with putty just selecting text with the left mouse button pressed instantly copies the text to the clipboard (Ctrl-C equivalent), and pressing the right mouse button pastes the content of the clipboard (Ctrl-V equivalent) - does your putty behave differently?

[petercinvest]

 copy is fine, but paste, I can't use Ctrl+V, I need to use ctrl+V to paste, not using mouse(my mouse can't use right button)