I don't think so. From my understanding using the "with" statement is still fine, as long as you are not trying to access deactivated instances. In my case I have called instance_activate_all earlier in the script, so they should be accessible using "with".
I did end up putting the object instances into a ds_list just so I could enumerate them after re-activation. Kinda sux but at least it gets me moving until a fix comes along or I understand the functions better.
Seems to still be a problem with reactivating instances. I can't perform "with" or even enumerate instances using "instance_number" on objects that have been reactivated in the same script... in fact I'm unsure how many steps it takes before an instance is accessible again.
I guess the work-around would be to put all the instances into a ds_list or something and enumerate that instead, but makes for unnecessary code especially if this is not the intended way for instance re-activation to work.
Anyone else has similar issues?
Neither of these methods appears to find any instances.. at least within the same script