What happens if new information is discovered, or new evidence presented that is different from what is already known?

I believe at such a point the new information is assessed and the original information is reassessed. Scientists perform many tests and research both sets of information in an effort to find out where, how and why, these ideas differ and , if possible, how they can be interrelated. Considering that science is not rigid and can be changed  as new information is presented and new things discovered. 

Determine the cause of death for anna garcia

we need additional information in order to determine the cause of death for anna garcia. there are at least 3 things with explanation included as to why we need them are as follows:

there would be some predate medical situations.there would be a report about the cause that why she was there for backache from the hospital.there would be a report about what she injected in her thigh that she suffered from backache.