ID 226448 - Paint node disconnects from input when re imported

Problem summary
Paint nodes disconnect when exported and re importe. See below:
Fig 1) Nodes on export

Fig 2) Re imported nodes

Customer reported version

3.0v3

Customer reported platform

Linux 2.6.32-358.el6.x86_64 x86_64  Scientific Linux release 6.4

Steps to reproduce

1) Create a paint node and a merge node in the node graph

2) Select the nodes, right click > Export Nodes 

3) Save and re import using right click > Import nodes

4) Note the paint node disconnects

Reproduced by support
Reprod by support in Win 7
3.0v1, 3.0v2, 3.0v3 & 3.0v4 

Expected behaviour
The node to remain connected