Most of the persons that emigrated, became heirs at some point in time. These inheritance problems have been solved in different ways. It may well be, that in some cases, there are some unsolved ,open questions. For this reason, having this in mind, one has to approach the newly found relatives with great care and respect, showing them only your pure genealogical interest. They will need some time to feel comfortable with that.
Nobody likes too many questions.
You should rather motivate your relatives to tell stories and alike on their own. Time will come, when you will be able to ask anything. If you are thinking of visiting the relatives there are also some points to be considered Every family clan has a certain internal hierarchy. If you find one related family, there will be five more right away. Try to find out, which family has the key position in that hierarchy and try not to ignore them.