changes made to RTC report are not reflecting in RTC

Hi,
using Navision 2009 R2
I have a custom report that i am updating with some formatting to a couple of numeric fields.
I am facing with 2 issues:
1.) no matter which format string i apply to the numeric fields, i am unable to get the output in desired format.
desired format is: 123.00
format strings applied: #,##0.00 --> No luck
format string applied: N2 --> no luck
it only shows 2 decimals if the actual data value contains 2 decimals.

2) after making the changes in visual studio and saving the changes:
- close visual studio
- click in the next line of report designer window in classic
- get asked to load the changes to layout - i select YES
- close report designer and get asked to compile - i select YES
- in RTC the report is attached to Print command of Posted Sales Invoices window
- select an invoice in the list and click print --> changes i just made are NOT visible in the RTC preview or when printed.
the only i managed to get this changes to come into RTC is: after compiling, export the modified report to a text file, open the text file, change the ID and name; re-import it; compile it; change the id in report selections; run the print command in RTC --> this brings the changes to RTC preview/print.
Has anybody come across this issue?
Appreciate any pointers.
thank you in anticipation