Why does text field in InfoPath 2010 show user name with two commas between first name and last?

Question

Here's the problem. I have a text field called Manager in an InfoPath 2010 form that is getting populated by a drop down field called
Business Unit.
The Business Unit drop-down field is pulling information from
column A in a custom list via a managed data connection. The custom List has two columns:
Title & Manager. 
The Manager column in the custom list is a 'Person or Group' type column.
The Data Connection pulls both the Title, Manager
(and ID) data.
There is a rule on the Business Unit drop-down field to change the value of the
Manager text field with the Manager data on the custom list. The rule pulls the
Manager information and filters the value to match the
Business Unit on the Data Connection with the Business Unit drop-down
field value (Main).
The Business Unit drop-down field works great and pulls the value from the custom list, and the rule populates the Manager text field. The problem is that Manager text field shows the name as such:
[smith,, john]. Notice the two commas between the last and first name. There should only be
one comma!
Anyone have an idea why the text field is appearing with two commas?
Arnel

Answer 1

Hi all,
I have a workaround for this. I have an InfoPath 2010 form pulling data from a SP2010 list. The user chooses a System (Business Unit) from the dropdown list and that choice auto populates the associated user (Manager) for that system. I had to
use concatenation, substring before and substring after to display the correct data.
concat(substring-before(DisplayName, ",, "), ", ", substring-after(DisplayName, ",, "))
DisplayName is the original data for the field. I am able to cut & paste this field into the formula. Therefore, I added a few spaces to separate it from the actually formula for future use.
Select Insert Function
Select concat
Select the first link to double-click to insert field
and then select Insert Function
Select the Text category and choose substring-before
Select the third link to double-click to insert field
and then select Insert Function
Select the Text category and choose substring-after
Copy and paste your fieldname (in my case DisplayName) in the
double-click to insert field
parts of the substring-before and substring-after links.
Delete the middle double-click to insert field link
Add quotes, spaces and commas so that they match the following format:
concat(substring-before(DisplayName, ",, "), ", ", substring-after(DisplayName,
Translation:
concat(substring-before(Doe,, John, ",, "), ", ", substring-after(Doe,,
John, ",, "))
Bring together all of the text before ",," (i.e. Doe) with ", " (comma, space) and all text after ",," (i.e. John).
It should return
Doe, John.
I hope this makes sense. I have these instructions with screenshots if you need them, contact me.