A process to prepare a spent catalyst fluid comprising a hydroformylation reaction catalyst comprising a Group 8 transition metal and a hydrolyzable organophosphorous ligand for precious metal recovery of the Group 8 transition metal, wherein the process minimizes or eliminates the formation of precipitates incorporating a precious metal, the process comprising: (a) removing a spent catalyst fluid from an active hydroformylation reaction system, wherein the spent catalyst fluid comprises the hydroformylation reaction catalyst and is substantially free of non-hydrolyzable triorganophosphorous compounds, wherein the term "substantially free of non-hydrolyzable triorganophosphorous compounds" means that non-hydrolyzable triorganophosphorous compounds are not used as ligands for the Group 8 transition metal to form the hydroformylation catalyst and to the extent any such non-hydrolyzable organophosphorous compounds are present in the spent catalyst fluid, such compounds are present in an amount of less than 0.1 moles of non-hydrolyzable triorganophosphorous compound per mole of Group 8 transition metal; and (b) adding a non-hydrolyzable triorganophosphorous compound to the spent catalyst fluid from step (a) prior to storing the fluid or prior to shipping for precious metal recovery, wherein the non-hydrolyzable triorganophosphorous compound is added to the spent catalyst fluid prior to the spent catalyst fluid being concentrated to recover aldehyde product, wherein hydrolyzable phosphorous ligands are trivalent phosphorous P (III) ligands that contain at least one P-Z bond, wherein Z is oxygen, nitrogen, chlorine, fluorine or bromine, wherein non-hydrolyzable phosphorous ligands are triorganophosphorous P (III) ligands that do not include a P-H or a P-Z bond, wherein Z is oxygen, nitrogen, chlorine, fluorine or bromine. (a) removing a spent catalyst fluid from an active hydroformylation reaction system, wherein the spent catalyst fluid comprises the hydroformylation reaction catalyst and is substantially free of non-hydrolyzable triorganophosphorous compounds, wherein the term "substantially free of non-hydrolyzable triorganophosphorous compounds" means that non-hydrolyzable triorganophosphorous compounds are not used as ligands for the Group 8 transition metal to form the hydroformylation catalyst and to the extent any such non-hydrolyzable organophosphorous compounds are present in the spent catalyst fluid, such compounds are present in an amount of less than 0.1 moles of non-hydrolyzable triorganophosphorous compound per mole of Group 8 transition metal; and (b) adding a non-hydrolyzable triorganophosphorous compound to the spent catalyst fluid from step (a) prior to storing the fluid or prior to shipping for precious metal recovery, wherein the non-hydrolyzable triorganophosphorous compound is added to the spent catalyst fluid prior to the spent catalyst fluid being concentrated to recover aldehyde product, wherein hydrolyzable phosphorous ligands are trivalent phosphorous P (III) ligands that contain at least one P-Z bond, wherein Z is oxygen, nitrogen, chlorine, fluorine or bromine, wherein non-hydrolyzable phosphorous ligands are triorganophosphorous P (III) ligands that do not include a P-H or a P-Z bond, wherein Z is oxygen, nitrogen, chlorine, fluorine or bromine. <EOS>