Grace notes transformed from acciaccatura to appoggiatura when copying

Hi,

I'd like to report a bug that I am not able to find a solution for:
any time I select and copy an entire measure which contains one or more grace notes and then copy and paste it into another empty measure all the grace notes that are acciaccatura in the original measure suddenly become appoggiatura (without the diagonal strike-through line) in the destination measure. It happens in case of single grace notes or two or more grace notes before a main note, regardless of the value of the grace note (8th, 16th etc).

This happens consistently and here are the steps I take:
1. select an entire measure or several measures
2. copy by Ctrl+C or select Copy from the Edit menu
3. select an empty measure(s)
4. paste by Ctrl+V or by selecting Paste from the Edit menu

I was not able to find a solution for this anywhere in the forums or user handbook and I apologize if this question has already been posted but I would like to be of some help in making this great program even better.
I am using Musescore version 1.2 revision 5470
OS: Windows XP Professional SP3

Thanks!