Uploads and those creating a WBE-like entity as progeny most likely would prefer to add improvements to a greater or lesser extent, rather than complete fidelity.
Some people may argue that WBEs should lead as natural an existence as possible, one very much like people.
On the assumption that these people value their uploads or progeny, however, some aspects of life experience would be edited out. For example, what would motivate one of these creators to pass their WBEs through an unpleasant end-of-life experience, like vascular dementia?
The emulated lives of uploads and progeny would, to a greater or lesser extent, be edited. We could try to reason more about that.
Would uploads avoid self improvement? If we are going to try to address this question, we should first consider the plausibility and importance of the whole upload concept.
Given the power and relatively young age of some Silicon Valley executives who seem to see uploading as part of their future, we might want to check to see whether the pursuit of uploading would have any side-effects.
If we believe that uploads are malleable and improvable, then the technology to create uploads would also permit the creation of more powerful minds, with all the consequences.