cant change size of Tracking points or locators from nuke

The 3d camera tracking was made on nuke, after I import into blender the FBX file successfully (the camera and the points), I change the size of all locator with individual origins and they look good, but after i skip one frame they get bigger again (like the size change wont save it). I can change manually one by one in the individual size (in the right panel), buy I cant merge them or group them so I should change one by one witch is ultra tedious. In maya I just select the locators and scale them with no problem. sorry about my English, its no the first language. Any ideas?
Thanks in advance, this is my first post BTW.