Description of problem:
When creating a Java transformer and selecting other transformer before selecting java transformer in the wizard then 2 transformers are created.

Version-Release number of selected component (if applicable):
JBTIS-4.1.3-Beta5

How reproducible:
always

Steps to Reproduce:
1. Import an attached project
2. In transformers tab select Add
3. Select JSON transformer (OK, there is a warning we cannot do this)
4. Select Java transformer
5. Specify name on next page and finish
6. After saving you will see 2 transformers (java and json)

Actual results:


Expected results:


Additional info: