BSSV is there a way around dictated input format?

We have done a handful of BSSV implementations in JDE 9.2.1.2 Tools Release 9.2.1.2 where we import XML files into JDE using BSSV however it seems that BSSV dictates the fieldnames to some extent for the input into the published service. If the first character of a field (xml tag) is uppercase but second character is lower case than BSSV requires the first character in the fieldname to be lowercase. If both first two characters are uppercase, it stays uppercase. Also each file has to have the soap wrapper.

In our old WSG integrations in JDE 8.12 you did not have these limitations on the input file. You could send for example a cXML file with whichever fieldnames it came with to WSG and it processed just fine into JDE.