Movement type 262 when creating a work order (tx IW31)

Hi experts!!!!!

I need to cover the following scenario:

*sometimes, when the client carries out a work, they recover one item. Ideally they want to take into consideration this item as well from a point of view of costs, which means that in order to carry our the work some items and labour will be used and it will be considered as a cost but the item recovered will be considered as less cost (profit). In customizing (plant maitenance -->Maitenance and service orders --> General data -->define movement types for material reservations) that it is possible to customize the movement type to be used in case of reservations (goods issues and cancellation of goods issues). I have checked that if I change the customizing and I put 262 instead of 261, the system behaves as desired. The thing is that this affects to all the components and this is not correct. Therefore, from the work order (IW32 or IW31) I have tried to change the movement type manually, but I found that the field movement type (at component level for items L, field RESBD-BWART) is grey and it can not be changed.

Therefore, my question is:

*how to customize field RESBD-BWART so that I can change whenever I create or change a work order

*which is the meaning of having cancellation of goods issue in the customizing if then I only can use movement 261.

On the other hand, I have checked the functionality "refurbishment" but I doesn't fit because we have to use valuation type and this is not desired....

Best regards